in OrderRuleMovementGenerator, if order is missing getAggregatedMovementList...

in OrderRuleMovementGenerator, if order is missing getAggregatedMovementList returns an empty list. 


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@31217 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/NewOrderRule.py

@@ -107,6 +107,8 @@ class OrderRuleMovementGenerator(object):
                                 rounding=False):
     """Input movement list comes from order"""
     order = context.getDefaultCausalityValue()
+    if order is None:
+      return None
     ret = []
     for movement in order.getMovementList(
       portal_type=order.getPortalOrderMovementTypeList()):