[PATCH 2 of 3 V2] py3: convert kwargs' keys to str using pycompat.strkwargs

[Pulkit Goyal]

# HG changeset patch
# User Pulkit Goyal <7895pulkit at gmail.com>
# Date 1493837661 -19800
#      Thu May 04 00:24:21 2017 +0530
# Node ID 75245b989dd661164041794620770ad7726fe9cd
# Parent  d186d8361d0526413dd1399e92ccdb40f3ca2056
py3: convert kwargs' keys to str using pycompat.strkwargs

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -1496,6 +1496,7 @@
         props['index'] = next(self._counter)
         props['revcache'] = {'copies': copies}
         props['cache'] = self.cache
+        props = pycompat.strkwargs(props)
 
         # write header
         if self._parts['header']:
@@ -1515,7 +1516,7 @@
         if self._parts['footer']:
             if not self.footer:
                 self.footer = templater.stringify(
-                    self.t(self._parts['footer'], **props))
+                                    self.t(self._parts['footer'], **props))
 
 def gettemplate(ui, tmpl, style):
     """