I18N: Prevent PHP warning in `WP_Textdomain_Registry`.

Prevents a warning upon cache invalidation after language pack updates if the arguments don’t have the expected format.

Follow-up to [57287], [57290], [57298], [57299].

See #58919.
Built from https://develop.svn.wordpress.org/trunk@57303


git-svn-id: http://core.svn.wordpress.org/trunk@56809 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-textdomain-registry.php

@@ -228,7 +228,11 @@ class WP_Textdomain_Registry {
 	 * @return void
 	 */
 	public function invalidate_mo_files_cache( $upgrader, $hook_extra ) {
-		if ( 'translation' !== $hook_extra['type'] || array() === $hook_extra['translations'] ) {
+		if (
+			! isset( $hook_extra['type'] ) ||
+			'translation' !== $hook_extra['type'] ||
+			array() === $hook_extra['translations']
+		) {
 			return;
 		}
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-alpha-57302';
+$wp_version = '6.5-alpha-57303';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.