reply_subject = "%s %s" % (re_prefix, reply_subject)
# get partner_ids from original message
partner_ids = [partner.id for partner in message_data.partner_ids] if message_data.partner_ids else []
- partner_ids += context.get('default_partner_ids') or []
+ partner_ids += context.get('default_partner_ids', [])
# update the result
result = {