Index: modules/node/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.module,v
retrieving revision 1.1064
diff -u -p -r1.1064 node.module
--- modules/node/node.module	4 Jun 2009 03:33:28 -0000	1.1064
+++ modules/node/node.module	4 Jun 2009 17:45:54 -0000
@@ -689,7 +689,7 @@ function node_type_update_nodes($old_typ
  *
  */
 function _node_types_build() {
-  $_node_types = drupal_static(__FUNCTION__);
+  $_node_types = &drupal_static(__FUNCTION__);
   if (is_object($_node_types)) {
     return $_node_types;
   }