fixed a small error

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@2950 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/OrderLine.py

@@ -108,7 +108,7 @@ class OrderLine(DeliveryLine):
       """
       DeliveryLine.manage_afterAdd(self, item, container)
       # Make sure we have a workflow with the variable name 'simulation_state'
-      if getattr(self.getParent(),'getSimulationState'):
+      if hasattr(self.getParent(),'getSimulationState'):
         if self.getParent().getSimulationState() not in self.getPortalDraftOrderStateList():
           # Only reexpand order rule when we add lines
           self.aq_parent.activate()._createOrderRule()