Networks and Sites: Trim site domain when creating a new site on Add New Site screen before further validation.

Props dharmin16, jeremyfelt, aubreypwd.
Fixes #44808.
Built from https://develop.svn.wordpress.org/trunk@45804


git-svn-id: http://core.svn.wordpress.org/trunk@45615 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/network/site-new.php

@@ -42,6 +42,8 @@ if ( isset( $_REQUEST['action'] ) && 'add-site' == $_REQUEST['action'] ) {
 
 	$blog   = $_POST['blog'];
 	$domain = '';
+
+	$blog['domain'] = trim( $blog['domain'] );
 	if ( preg_match( '|^([a-zA-Z0-9-])+$|', $blog['domain'] ) ) {
 		$domain = strtolower( $blog['domain'] );
 	}

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45803';
+$wp_version = '5.3-alpha-45804';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.