erp5_core: fix RP5Site_getWorkflowStateItemList a dict contents error."

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/ERP5Site_getWorkflowStateItemList.xml

@@ -95,12 +95,13 @@ for portal_type in portal_type:\n
     if state_var not in (None, workflow.getStateVariable()):\n
       continue\n
     \n
-    for state in workflow.getStateValueList():\n
-      if state.id in state_set:\n
+    for state_id in workflow.getStateValueList():\n
+      state =  workflow.getStateValueList().get(state_id)\n
+      if state_id in state_set:\n
         continue\n
-      state_set.add(state.id)\n
+      state_set.add(state_id)\n
       \n
-      result_list.append((str(translateString(state.title)), state.id))\n
+      result_list.append((str(translateString(state.title)), state_id))\n
 \n
 return result_list\n