bug fix, translation_service was a not existing variable

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5153 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/MultiRelationField.py

@@ -439,7 +439,9 @@ class MultiRelationStringFieldValidator(Validator.LinesValidator,  RelationField
                 # Get the query results
                 relation_list = portal_catalog(**kw)
                 relation_uid_list = map(lambda x: x.uid, relation_list)
-
+                translation_service = getToolByName(field,
+                                                    'translation_service',
+                                                    None)
                 # Prepare a menu
                 if translation_service is not None:
                   N_ = translation_service.translate