mercurial/utils/hashutil.py

contrib: fix typo

I forgot to fix it in flight, this commit will do fine.

from __future__ import absolute_import

import hashlib

try:
    from ..thirdparty import sha1dc  # pytype: disable=import-error

    sha1 = sha1dc.sha1
except (ImportError, AttributeError):
    sha1 = hashlib.sha1