Index: modules/system/system.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.install,v
retrieving revision 1.352
diff -u -r1.352 system.install
--- modules/system/system.install	4 Jul 2009 04:23:27 -0000	1.352
+++ modules/system/system.install	4 Jul 2009 06:16:49 -0000
@@ -2078,6 +2137,8 @@
  * Add the queue tables.
  */
 function system_update_7022() {
+  $ret = array();
+
   $schema['queue'] = array(
     'description' => 'Stores items in queues.',
     'fields' => array(