[trunk] traceback when applying general setting (google ?)

[Aline (OpenERP)]

trunk, db all, runbot, go to Settings/configuration/general settings, apply. I think is comes from google

Traceback (most recent call last):
  File "/home/odoo/runbot/static/openerp-dev-trunk-job-positions-19065/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-job-positions-19065/server/openerp/addons/web/http.py", line 174, in _call_function
    return self.func(*args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-job-positions-19065/server/openerp/addons/web/http.py", line 1053, in nfunc
    return func(*args, **kwargs)
  File "/home/odoo/runbot/static/openerp-dev-trunk-job-positions-19065/server/openerp/addons/web/controllers/main.py", line 1095, in call_button
    action = self._call_kw(model, method, args, {})
  File "/home/odoo/runbot/static/openerp-dev-trunk-job-positions-19065/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-job-positions-19065/server/openerp/addons/base/res/res_config.py", line 560, in execute
    getattr(self, method)(cr, uid, ids, context)
  File "/home/odoo/runbot/static/openerp-dev-trunk-job-positions-19065/server/openerp/addons/google_drive/google_drive.py", line 226, in set_google_authorization_code
    refresh_token = self.pool['google.service'].generate_refresh_token(cr, uid, 'drive', config.google_drive_authorization_code, context=context)
  File "/home/odoo/runbot/static/openerp-dev-trunk-job-positions-19065/server/openerp/addons/google_base_account/google_base_account.py", line 52, in generate_refresh_token
    return content.get('refresh_token')
UnboundLocalError: local variable 'content' referenced before assignment