- fix typo

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45127 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -2060,7 +2060,7 @@ class PortalTypeWorkflowChainTemplateItem(BaseTemplateItem):
               old_chain_workflow_id_set.add(wf_id[1:])
             # then either '+' or nothing, add wf id to the list
             else:
-              wf_id.lstrip('+')
+              wf_id = wf_id.lstrip('+')
               old_chain_workflow_id_set.add(wf_id)
             # create the new chain
             chain_dict[chain_key] = list(old_chain_workflow_id_set)