#952528 by jptavan: Add missing break; to system help to prevent actions help...

#952528 by jptavan: Add missing break; to system help to prevent actions help from showing up on maintenance page.

modules/system/system.module

@@ -124,6 +124,7 @@ function system_help($path, $arg) {
       if ($user->uid == 1) {
         return '<p>' . t('If you are upgrading to a newer version of Drupal or upgrading contributed modules or themes, you may need to run the <a href="@update-php">update script</a>.', array('@update-php' => $base_url . '/update.php')) . '</p>';
       }
+      break;
     case 'admin/config/system/actions':
     case 'admin/config/system/actions/manage':
       $output = '';