fixed change refconfig in acl struct

SE/se-lib/Route/Storage/AclStruct.php

@@ -558,6 +558,7 @@ class Route_Storage_AclStruct extends RouteBase {
 		}
 
 		if ('setFieldRefConfig' === V::get('_postTask', '', $_POST)) {
+			$objectNamespace = $namespace;
 			$childTypeName = V::get('field', '', $_POST);
 			$source = V::get('source', '', $_POST);
 			$toUpdateField = array_filter($item['field'], function ($field) use ($childTypeName) { return ($childTypeName === $field['fieldNamespace']); });