diff --git a/wp-admin/includes/plugin-install.php b/wp-admin/includes/plugin-install.php
index 6081bff05c..20aece0153 100644
--- a/wp-admin/includes/plugin-install.php
+++ b/wp-admin/includes/plugin-install.php
@@ -427,6 +427,7 @@ function install_plugin_install_status( $api, $loop = false ) {
 	$status      = 'install';
 	$url         = false;
 	$update_file = false;
+	$version     = '';
 
 	/*
 	 * Check to see if this plugin is known to be installed,
diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index a970116e68..0d599ef542 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -1099,18 +1099,24 @@ function wp_edit_posts_query( $q = false ) {
 	}
 
 	$avail_post_stati = get_available_post_statuses( $post_type );
+	$post_status      = '';
+	$perm             = '';
 
 	if ( isset( $q['post_status'] ) && in_array( $q['post_status'], $post_stati ) ) {
 		$post_status = $q['post_status'];
 		$perm        = 'readable';
 	}
 
+	$orderby = '';
+
 	if ( isset( $q['orderby'] ) ) {
 		$orderby = $q['orderby'];
 	} elseif ( isset( $q['post_status'] ) && in_array( $q['post_status'], array( 'pending', 'draft' ) ) ) {
 		$orderby = 'modified';
 	}
 
+	$order = '';
+
 	if ( isset( $q['order'] ) ) {
 		$order = $q['order'];
 	} elseif ( isset( $q['post_status'] ) && 'pending' == $q['post_status'] ) {
diff --git a/wp-includes/class-wp-block-parser.php b/wp-includes/class-wp-block-parser.php
index 439a2ce32b..216cb9a5f7 100644
--- a/wp-includes/class-wp-block-parser.php
+++ b/wp-includes/class-wp-block-parser.php
@@ -63,10 +63,10 @@ class WP_Block_Parser_Block {
 	public $innerContent;
 
 	function __construct( $name, $attrs, $innerBlocks, $innerHTML, $innerContent ) {
-		$this->blockName    = $name;
-		$this->attrs        = $attrs;
-		$this->innerBlocks  = $innerBlocks;
-		$this->innerHTML    = $innerHTML;
+		$this->blockName   = $name;
+		$this->attrs       = $attrs;
+		$this->innerBlocks = $innerBlocks;
+		$this->innerHTML   = $innerHTML;
 		$this->innerContent = $innerContent;
 	}
 }
@@ -269,17 +269,15 @@ class WP_Block_Parser {
 				 */
 				if ( 0 === $stack_depth ) {
 					if ( isset( $leading_html_start ) ) {
-						$this->output[] = (array) self::freeform(
-							substr(
-								$this->document,
-								$leading_html_start,
-								$start_offset - $leading_html_start
-							)
-						);
+						$this->output[] = (array) self::freeform( substr(
+							$this->document,
+							$leading_html_start,
+							$start_offset - $leading_html_start
+						) );
 					}
 
 					$this->output[] = (array) new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() );
-					$this->offset   = $start_offset + $token_length;
+					$this->offset = $start_offset + $token_length;
 					return true;
 				}
 
@@ -294,16 +292,13 @@ class WP_Block_Parser {
 
 			case 'block-opener':
 				// track all newly-opened blocks on the stack
-				array_push(
-					$this->stack,
-					new WP_Block_Parser_Frame(
-						new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() ),
-						$start_offset,
-						$token_length,
-						$start_offset + $token_length,
-						$leading_html_start
-					)
-				);
+				array_push( $this->stack, new WP_Block_Parser_Frame(
+					new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() ),
+					$start_offset,
+					$token_length,
+					$start_offset + $token_length,
+					$leading_html_start
+				) );
 				$this->offset = $start_offset + $token_length;
 				return true;
 
@@ -334,11 +329,11 @@ class WP_Block_Parser {
 				 * otherwise we're nested and we have to close out the current
 				 * block and add it as a new innerBlock to the parent
 				 */
-				$stack_top                        = array_pop( $this->stack );
-				$html                             = substr( $this->document, $stack_top->prev_offset, $start_offset - $stack_top->prev_offset );
-				$stack_top->block->innerHTML     .= $html;
+				$stack_top = array_pop( $this->stack );
+				$html = substr( $this->document, $stack_top->prev_offset, $start_offset - $stack_top->prev_offset );
+				$stack_top->block->innerHTML .= $html;
 				$stack_top->block->innerContent[] = $html;
-				$stack_top->prev_offset           = $start_offset + $token_length;
+				$stack_top->prev_offset = $start_offset + $token_length;
 
 				$this->add_inner_block(
 					$stack_top->block,
@@ -396,22 +391,22 @@ class WP_Block_Parser {
 			return array( 'no-more-tokens', null, null, null, null );
 		}
 
-		list( $match, $started_at ) = $matches[0];
+		list( $match, $started_at ) = $matches[ 0 ];
 
 		$length    = strlen( $match );
-		$is_closer = isset( $matches['closer'] ) && -1 !== $matches['closer'][1];
-		$is_void   = isset( $matches['void'] ) && -1 !== $matches['void'][1];
-		$namespace = $matches['namespace'];
-		$namespace = ( isset( $namespace ) && -1 !== $namespace[1] ) ? $namespace[0] : 'core/';
-		$name      = $namespace . $matches['name'][0];
-		$has_attrs = isset( $matches['attrs'] ) && -1 !== $matches['attrs'][1];
+		$is_closer = isset( $matches[ 'closer' ] ) && -1 !== $matches[ 'closer' ][ 1 ];
+		$is_void   = isset( $matches[ 'void' ] ) && -1 !== $matches[ 'void' ][ 1 ];
+		$namespace = $matches[ 'namespace' ];
+		$namespace = ( isset( $namespace ) && -1 !== $namespace[ 1 ] ) ? $namespace[ 0 ] : 'core/';
+		$name      = $namespace . $matches[ 'name' ][ 0 ];
+		$has_attrs = isset( $matches[ 'attrs' ] ) && -1 !== $matches[ 'attrs' ][ 1 ];
 
 		/*
 		 * Fun fact! It's not trivial in PHP to create "an empty associative array" since all arrays
 		 * are associative arrays. If we use `array()` we get a JSON `[]`
 		 */
 		$attrs = $has_attrs
-			? json_decode( $matches['attrs'][0], /* as-associative */ true )
+			? json_decode( $matches[ 'attrs' ][ 0 ], /* as-associative */ true )
 			: $this->empty_attrs;
 
 		/*
@@ -476,17 +471,17 @@ class WP_Block_Parser {
 	 * @param int|null $last_offset last byte offset into document if continuing form earlier output
 	 */
 	function add_inner_block( WP_Block_Parser_Block $block, $token_start, $token_length, $last_offset = null ) {
-		$parent                       = $this->stack[ count( $this->stack ) - 1 ];
+		$parent = $this->stack[ count( $this->stack ) - 1 ];
 		$parent->block->innerBlocks[] = (array) $block;
-		$html                         = substr( $this->document, $parent->prev_offset, $token_start - $parent->prev_offset );
+		$html = substr( $this->document, $parent->prev_offset, $token_start - $parent->prev_offset );
 
 		if ( ! empty( $html ) ) {
-			$parent->block->innerHTML     .= $html;
+			$parent->block->innerHTML .= $html;
 			$parent->block->innerContent[] = $html;
 		}
 
 		$parent->block->innerContent[] = null;
-		$parent->prev_offset           = $last_offset ? $last_offset : $token_start + $token_length;
+		$parent->prev_offset = $last_offset ? $last_offset : $token_start + $token_length;
 	}
 
 	/**
@@ -505,18 +500,16 @@ class WP_Block_Parser {
 			: substr( $this->document, $prev_offset );
 
 		if ( ! empty( $html ) ) {
-			$stack_top->block->innerHTML     .= $html;
+			$stack_top->block->innerHTML .= $html;
 			$stack_top->block->innerContent[] = $html;
 		}
 
 		if ( isset( $stack_top->leading_html_start ) ) {
-			$this->output[] = (array) self::freeform(
-				substr(
-					$this->document,
-					$stack_top->leading_html_start,
-					$stack_top->token_start - $stack_top->leading_html_start
-				)
-			);
+			$this->output[] = (array) self::freeform( substr(
+				$this->document,
+				$stack_top->leading_html_start,
+				$stack_top->token_start - $stack_top->leading_html_start
+			) );
 		}
 
 		$this->output[] = (array) $stack_top->block;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 618f820af0..9931f352ba 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-44296';
+$wp_version = '5.1-alpha-44297';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.