Workflow.py: check if object type is definded in portal_types, if not, do not...

Workflow.py: check if object type is definded in portal_types, if not, do not execute gerTypeWorkflowList for this object.

product/ERP5Workflow/Document/Workflow.py

@@ -372,7 +372,7 @@ class Workflow(IdAsReferenceMixin("", "prefix"), XMLObject):
         workflow_tool = portal.portal_workflow
         result = []
         append = result.append
-
+        if info.object.getTypeInfo() is not None:
           for workflow_id in info.object.getTypeInfo().getTypeWorkflowList():
               append(info.object.getTypeInfo().getId())
         return result