ERP5Workflow: fix broken list name

product/ERP5Workflow/Tool/WorkflowTool.py

@@ -575,7 +575,7 @@ class WorkflowTool(BaseTool, OriginalWorkflowTool):
         self.delTypeCBT(ptype_id, workflow_id)
         # 2. assign ERP5 Workflow to portal type:
         type_workflow_list = ptype.getTypeWorkflowList()
-        if workflow_id not in workflow_list:
+        if workflow_id not in type_workflow_list:
           ptype.setTypeWorkflowList(
             type_workflow_list + [workflow_id]
           )