convert unicode string

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14955 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5SyncML/SynchronizationTool.py

@@ -823,6 +823,8 @@ class SynchronizationTool( SubscriptionSynchronization,
     #LOG('sendResponse, from_url: ',0,from_url)
     #LOG('sendResponse, sync_id: ',0,sync_id)
     #LOG('sendResponse, xml: \n',0,xml)
+    if isinstance(xml, unicode):
+      xml = xml.encode('utf-8')
     if domain is not None:
       gpg_key = domain.getGPGKey()
       if gpg_key not in ('',None):