Ticket #11100: 11100.patch

wp-includes/post.php

@@ -694 +694 @@
         if ( $post_ids ) {
                 $postmetaids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = %s", $post_meta_key ) );
                 do_action( 'delete_postmeta', $postmetaids );
-                $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN(%s)", implode( ',', $postmetaids) ) );
+                $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_id IN(" . implode( ',', $postmetaids) . ')' );
                 do_action( 'deleted_postmeta', $postmetaids );
                 foreach ( $post_ids as $post_id )
                         wp_cache_delete($post_id, 'post_meta');