diff -r 21b363bd87dc -r b502138f5faa mercurial/extensions.py
--- a/mercurial/extensions.py	Mon Jan 04 21:54:46 2016 -0800
+++ b/mercurial/extensions.py	Thu Dec 31 08:16:59 2015 +0000
@@ -45,7 +45,7 @@
     '''return module with given extension name'''
     mod = None
     try:
-        mod =  _extensions[name]
+        mod = _extensions[name]
     except KeyError:
         for k, v in _extensions.iteritems():
             if k.endswith('.' + name) or k.endswith('/' + name):