Issue #2218999 by fietserwin: Fixed Warning: Invalid argument supplied for...

Issue #2218999 by fietserwin: Fixed Warning: Invalid argument supplied for foreach() in element_children() (line 6420 of includes\common.inc).

feeds_ui/feeds_ui.admin.inc

@@ -692,6 +692,7 @@ function feeds_ui_mapping_settings_form($form, $form_state, $i, $mapping, $targe
       );
     }
   }
+  return array();
 }
 
 /**