From 02f4d7b6be3d16f999672151bd64804ed0c3002d Mon Sep 17 00:00:00 2001
From: Augie Fackler <augie@google.com>
Date: Mon, 24 Jul 2017 10:21:23 -0400
Subject: [PATCH] obsolete: reuse _fm1metapair for computing _fm1metapairsize

It's evaluated at import time, so it seems silly to not reuse the
constant name.
---
 mercurial/obsolete.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mercurial/obsolete.py b/mercurial/obsolete.py
index a298708b42..52123f6f01 100644
--- a/mercurial/obsolete.py
+++ b/mercurial/obsolete.py
@@ -314,7 +314,7 @@ _fm1parentnone = 3
 _fm1parentshift = 14
 _fm1parentmask = (_fm1parentnone << _fm1parentshift)
 _fm1metapair = 'BB'
-_fm1metapairsize = _calcsize('BB')
+_fm1metapairsize = _calcsize(_fm1metapair)
 
 def _fm1purereadmarkers(data, off, stop):
     # make some global constants local for performance