zopewsgi: fixes UnboundLocalError: local variable 'warnings' referenced before assignment
91cc6c4e (ERP5Type/Utils: configure warnings in zopewsgi, 2024-02-16) was bad, on python2 zope did not start.
91cc6c4e (ERP5Type/Utils: configure warnings in zopewsgi, 2024-02-16) was bad, on python2 zope did not start.