WorkflowTool.py: modification of simplification.

product/ERP5/Tool/WorkflowTool.py

@@ -747,7 +747,7 @@ class WorkflowTool(BaseTool, OriginalWorkflowTool):
       workflow_list = document_pt.getTypeWorkflowList()
       for wf_id in workflow_list:
         did[wf_id] = None
-        wf = self.getPortalObject().portal_workflow._getOb(wf_id, None)
+        wf = self._getOb(wf_id, None)
         if wf is not None:
           a = wf.listObjectActions(info)
           if a is not None and a != []: