[PATCH 3 of 8 py3] exchange: use '%d' % x instead of str(x) to encode ints

[Augie Fackler]

# HG changeset patch
# User Augie Fackler <raf at durin42.com>
# Date 1503451273 14400
#      Tue Aug 22 21:21:13 2017 -0400
# Node ID e6d61e2a38873be057c9ecd0432750935423d745
# Parent  43b1c3ab1d6a4af1ea86f4e9d676d52740782895
exchange: use '%d' % x instead of str(x) to encode ints

Recommended by Yuya instead of using pycompat.bytestr() in this case.

diff --git a/mercurial/exchange.py b/mercurial/exchange.py
--- a/mercurial/exchange.py
+++ b/mercurial/exchange.py
@@ -791,8 +791,8 @@ def _pushb2phases(pushop, bundler):
         part = bundler.newpart('pushkey')
         part.addparam('namespace', enc('phases'))
         part.addparam('key', enc(newremotehead.hex()))
-        part.addparam('old', enc(str(phases.draft)))
-        part.addparam('new', enc(str(phases.public)))
+        part.addparam('old', enc('%d' % phases.draft))
+        part.addparam('new', enc('%d' % phases.public))
         part2node.append((part.id, newremotehead))
         pushop.pkfailcb[part.id] = handlefailure