[PATCH 8 of 9 py3] branchmap: stringify int in a portable way

[Augie Fackler]

# HG changeset patch
# User Augie Fackler <augie at google.com>
# Date 1489297366 18000
#      Sun Mar 12 00:42:46 2017 -0500
# Node ID 12fa9b8994f4fa746f11d97dd0bc697c5a1f860a
# Parent  062d30be868aad888f8d2e51d65999cb8c94b81a
branchmap: stringify int in a portable way

We actually need a bytes in Python 3, and thanks to our nasty source
loader this will portably do the right thing.

diff --git a/mercurial/branchmap.py b/mercurial/branchmap.py
--- a/mercurial/branchmap.py
+++ b/mercurial/branchmap.py
@@ -234,7 +234,7 @@ class branchcache(dict):
     def write(self, repo):
         try:
             f = repo.vfs(_filename(repo), "w", atomictemp=True)
-            cachekey = [hex(self.tipnode), str(self.tiprev)]
+            cachekey = [hex(self.tipnode), '%d' % self.tiprev]
             if self.filteredhash is not None:
                 cachekey.append(hex(self.filteredhash))
             f.write(" ".join(cachekey) + '\n')