Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.317
diff -u -p -r1.317 menu.inc
--- includes/menu.inc	2 Apr 2009 03:40:05 -0000	1.317
+++ includes/menu.inc	6 Apr 2009 16:51:23 -0000
@@ -2336,9 +2336,9 @@ function menu_link_maintain($module, $op
         ->condition('link_path', $link_path)
         ->condition('customized', 0)
         ->condition('module', $module)
-        ->execute();
-      foreach ($result as $item) {
-        menu_cache_clear($item['menu_name']);
+        ->execute()->fetchCol();
+      foreach ($result as $menu_name) {
+        menu_cache_clear($menu_name);
       }
       break;
     case 'delete':