Site Health: Check if directories exist before checking size.

Prevents the Site Health Debug tab from stalling when reporting directory sizes if the directory does not exist.

Reviewed by hellofromTonya.
Merges [58884] to the 6.6 branch.

Props clorith, aristath, narenin, kowsar89, hellofromTonya, ironprogrammer, shailu25.
Fixes #61638.
Built from https://develop.svn.wordpress.org/branches/6.6@58891


git-svn-id: http://core.svn.wordpress.org/branches/6.6@58287 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-debug-data.php

@@ -1670,6 +1670,18 @@ class WP_Debug_Data {
 				'raw'  => 0,
 			);
 
+			// If the directory does not exist, skip checking it, as it will skew the other results.
+			if ( ! is_dir( $path ) ) {
+				$all_sizes[ $name ] = array(
+					'path'  => $path,
+					'raw'   => 0,
+					'size'  => __( 'The directory does not exist.' ),
+					'debug' => 'directory not found',
+				);
+
+				continue;
+			}
+
 			if ( microtime( true ) - WP_START_TIMESTAMP < $max_execution_time ) {
 				if ( 'wordpress_size' === $name ) {
 					$dir_size = recurse_dirsize( $path, $exclude, $max_execution_time );

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6.2-alpha-58874';
+$wp_version = '6.6.2-alpha-58891';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.