hgweb: move call to protocol handler outside of try..except
The protocol handler doesn't raise ErrorResponse. So it doesn't
need to be in this `try..except ErrorResponse` block.
Differential Revision: https://phab.mercurial-scm.org/D2020
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)