get subscriber from acquisition context

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16577 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5SyncML/XMLSyncUtils.py

@@ -1617,6 +1617,7 @@ class XMLSyncUtils(XMLSyncUtilsMixin):
         subscriber.setXMLMapping(publication.getXMLMapping())
         subscriber.setConduit(publication.getConduit())
         publication.addSubscriber(subscriber)
+        subscriber = subscriber.__of__(publication)
         # first synchronization
         result = self.PubSyncInit(publication,xml_client,subscriber=subscriber,
             sync_type=self.SLOW_SYNC)