Ticket #34500: 34500.2.patch

wp-admin/includes/nav-menu.php

@@ -902 +902 @@
                 if ( class_exists( $walker_class_name, false ) )
                         $walker = new $walker_class_name;
                 else
-                        return new WP_Error( 'menu_walker_not_exist', sprintf( __('The Walker class named <strong>%s</strong> does not exist.'), $walker_class_name ) );
+                        return new WP_Error( 'menu_walker_not_exist', sprintf( __( 'The Walker class named %s does not exist.' ), '<strong>' . $walker_class_name . '</strong>' ) );
 
                 $some_pending_menu_items = $some_invalid_menu_items = false;
                 foreach ( (array) $menu_items as $menu_item ) {