permissions: fixed audit log data on user group permissions view.

rhodecode/apps/user_group/views/__init__.py

@@ -333,7 +333,7 b' class UserGroupsView(UserGroupAppView):'
 
         try:
             changes = UserGroupModel().update_permissions(
-                user_group_id,
+                user_group,
                 form['perm_additions'], form['perm_updates'],
                 form['perm_deletions'])