getWorkflowSateOf should return because there is no state

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@2672 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/InteractionWorkflow.py

@@ -301,6 +301,8 @@ class InteractionWorkflowDefinition (DCWorkflowDefinition, ActiveObject):
                         ob, self, status, tdef, None, None, None)                        
           script(sci)                         
   
+    def _getWorkflowStateOf(self, ob, id_only=0):
+          return None
           
 Globals.InitializeClass(InteractionWorkflowDefinition)