Merge lp:~yann-papouin/openobject-addons/6.1-bug-1222859-mail-thread-wosubject into lp:openobject-addons/6.1

[Yann Papouin]

Add a subject string "(No subject)" to python dictionnary if no subject is parsed from the mail.

=== modified file 'mail/mail_thread.py'
--- mail/mail_thread.py	2012-08-10 11:48:38 +0000
+++ mail/mail_thread.py	2013-10-10 09:03:04 +0000
@@ -227,7 +227,7 @@
             if not partner_id and thread._name == 'res.partner':
                 partner_id = thread.id
             data = {
-                'subject': subject,
+                'subject': subject or _('(No subject)'),
                 'user_id': uid,
                 'model' : thread._name,
                 'partner_id': partner_id,
@@ -357,7 +357,7 @@
             references = msg.get('references') or msg.get('in-reply-to')
             match = tools.reference_re.search(references)
             if match: res_id = match.group(1)
-        if not res_id:
+        if not res_id and msg.get('subject'):
             match = tools.res_re.search(msg['subject'])
             if match: res_id = match.group(1)
         if res_id: