Comments/PHP Notices: check that a parent comment exists before displaying an orphan's link to it in the admin.

Props rachelbaker.
Fixes #33710.

Built from https://develop.svn.wordpress.org/trunk@34015


git-svn-id: http://core.svn.wordpress.org/trunk@33984 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/edit-form-comment.php

@@ -119,6 +119,7 @@ if ( current_user_can( 'edit_post', $post_id ) ) {
 <?php
 if ( $comment->comment_parent ) :
 	$parent      = get_comment( $comment->comment_parent );
+	if ( $parent ) :
 		$parent_link = esc_url( get_comment_link( $comment->comment_parent ) );
 		$name        = get_comment_author( $parent->comment_ID );
 	?>
@@ -129,7 +130,8 @@ if ( $comment->comment_parent ) :
 			'<b><a href="' . $parent_link . '">' . $name . '</a></b>'
 		); ?>
 	</div>
-<?php endif; ?>
+<?php endif;
+endif; ?>
 
 <?php
 	/**

wp-admin/includes/class-wp-comments-list-table.php

@@ -607,10 +607,12 @@ class WP_Comments_List_Table extends WP_List_Table {
 
 		if ( $comment->comment_parent ) {
 			$parent = get_comment( $comment->comment_parent );
+			if ( $parent ) {
 				$parent_link = esc_url( get_comment_link( $parent ) );
 				$name = get_comment_author( $parent );
 				printf( ' | '.__( 'In reply to <a href="%1$s">%2$s</a>.' ), $parent_link, $name );
 			}
+		}
 
 		echo '</div>';
 		comment_text( $comment );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34014';
+$wp_version = '4.4-alpha-34015';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.