Fix a bug in user admin when removing all of a user's parent groups.

application/modules/auth/controllers/UserAdminController.php

@@ -71,7 +71,6 @@ class Auth_UserAdminController extends App_Controller_Action
     public function editUserPostAction()
     {
     	$in = $this->_getAllParams();
-    	print_r($in);
     	
     	$user = Auth_UserModel::find($in['id']);
     	if (!$user) {

application/modules/auth/models/GroupModel.php

@@ -419,6 +419,9 @@ class Auth_GroupModel extends Unl_Model
         }
         
         foreach ($groupMap as $childGroupId => $targetParentGroups) {
+        	if (!$targetParentGroups) {
+        		$targetParentGroups = new Unl_Model_Collection(__CLASS__);
+        	}
             $currentParentGroups = $childGroupParentGroups[$childGroupId];
             foreach ($currentParentGroups as $currentParentGroup) {
                 if (!in_array($currentParentGroup->getId(), $targetParentGroups->getId())) {