[Trunk] can't able to send email from reply button

To reproduce the bug on runbot go to settings -> Technical -> Email -> Emails -> click to reply button then generate error

Traceback (most recent call last):
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/web/http.py", line 314, in dispatch
    response["result"] = self._call_function(**self.params)
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/web/http.py", line 174, in _call_function
    return self.func(*args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/web/http.py", line 1048, in nfunc
    return func(*args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/web/controllers/main.py", line 1091, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/web/controllers/main.py", line 1083, in _call_kw
    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/mail/wizard/mail_compose_message.py", line 84, in default_get
    vals = self.get_message_data(cr, uid, message_id, context=context)
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/addons/mail/wizard/mail_compose_message.py", line 209, in get_message_data
    reply_subject = tools.ustr(message_data.subject or message_data.record_name or '')
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/osv/orm.py", line 484, in __getattr__
    return self[name]
  File "/home/odoo/runbot/static/openerp-dev-trunk-17472/server/openerp/osv/orm.py", line 419, in __getitem__
    raise KeyError('Field %s not found in %s'%(name, self))
AttributeError: Got KeyError('Field subject not found in browse_record(mail.message, 130)',) while trying to get attribute subject on a mail.message record.