sha1dc: declare all variables at begininng of block
This is required to appease ancient C language standards, which
msvc 2008 still requires for Python 2.7 on Windows.
Differential Revision: https://phab.mercurial-scm.org/D7877
from __future__ import absolute_import, print_function
import re
import sys
print(re.sub(r"(?<=Message-Id:) \n ", " ", sys.stdin.read()), end="")