Workflow.py: skip getTypeWorkflow if Type is none. This correction corresponds...

Workflow.py: skip getTypeWorkflow if Type is none. This correction corresponds to the worklist generation.

product/ERP5Workflow/Document/Workflow.py

@@ -372,6 +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