Fixed #25779 -- Removed redundant try block in WSGIHandler

        # settings weren't available.

        if self._request_middleware is None:

            with self.initLock:

                try:

                # Check that middleware is still uninitialized.

                if self._request_middleware is None:

                    self.load_middleware()

                except Exception:

                    # Unload whatever middleware we got

                    self._request_middleware = None

                    raise

        set_script_prefix(get_script_name(environ))

        signals.request_started.send(sender=self.__class__, environ=environ)