WorkflowTool.py: when add workflow_id from type_workflow_list to...

WorkflowTool.py: when add workflow_id from type_workflow_list to _chain_by_type, first check if portal_type is already in chain_by_type. If it is already there, then move the workflow_id, else, create the dict and add the workflow_id.

product/ERP5/Tool/WorkflowTool.py

@@ -202,8 +202,11 @@ class WorkflowTool(BaseTool, OriginalWorkflowTool):
       portal_type = self.getPortalObject().portal_types._getOb(portal_type_id, None)
       if portal_type is not None:
         for workflow_id in portal_type.getTypeWorkflowList():
+          if portal_type_id in self._chains_by_type:
             if workflow_id not in self._chains_by_type[portal_type_id]:
               self.addTypeCBT(portal_type_id, workflow_id)
+          else:
+            self._chains_by_type[portal_type_id] = (workflow_id,)
 
   def getChainFor(self, ob):
       """ Get the chain that applies to the given object.