[PATCH 4 of 4 py3] minirst: use bytes.strip instead of str.strip

[Pulkit Goyal]

# HG changeset patch
# User Pulkit Goyal <7895pulkit at gmail.com>
# Date 1489339017 -19800
#      Sun Mar 12 22:46:57 2017 +0530
# Node ID a780f27bd455458749eff3e757daa4e39eb719ad
# Parent  6cccbcf562c29d073d9cdf775fb07e40e32fad0b
minirst: use bytes.strip instead of str.strip

bytes.strip exists in Python 2.6 and Python 2.7 also.

diff -r 6cccbcf562c2 -r a780f27bd455 mercurial/minirst.py
--- a/mercurial/minirst.py	Sun Mar 12 22:33:43 2017 +0530
+++ b/mercurial/minirst.py	Sun Mar 12 22:46:57 2017 +0530
@@ -549,7 +549,7 @@
     elif block['type'] == 'option':
         return formatoption(block, width)
 
-    text = ' '.join(map(str.strip, block['lines']))
+    text = ' '.join(map(bytes.strip, block['lines']))
     return util.wrap(text, width=width,
                      initindent=indent,
                      hangindent=subindent) + '\n'