--- a/mercurial/httppeer.py	Mon Oct 02 19:25:11 2017 -0700
+++ b/mercurial/httppeer.py	Fri Sep 29 15:48:34 2017 +0000
@@ -151,7 +151,7 @@
         if urlopener:
             for h in urlopener.handlers:
                 h.close()
-                getattr(h, "close_all", lambda : None)()
+                getattr(h, "close_all", lambda: None)()
 
     # Begin of _basepeer interface.