Base.py: improve a condiction syntax.

product/ERP5Type/Base.py

@@ -223,8 +223,7 @@ class WorkflowMethod(Method):
             # a run-once transition, prevent it from running again in
             # the same transaction
             transactional_variable[once_transition_key] = 1
-        elif candidate_workflow.__class__.__name__ == 'DCWorkflowDefinition' or \
-            candidate_workflow.__class__.__name__ == 'Workflow':
+        elif candidate_workflow.__class__.__name__ in ['DCWorkflowDefinition', 'Workflow']:
           raise UnsupportedWorkflowMethod(instance, wf_id, transition_id)
           # XXX Keep the log for projects that needs to comment out
           #     the previous line.