diff -r 884b595f5195 -r 5326e4ef1dab mercurial/sshserver.py
--- a/mercurial/sshserver.py	Mon Oct 02 18:18:57 2017 +0100
+++ b/mercurial/sshserver.py	Fri Sep 29 15:49:20 2017 +0000
@@ -127,7 +127,8 @@
                 r = impl()
                 if r is not None:
                     self.sendresponse(r)
-            else: self.sendresponse("")
+            else:
+                self.sendresponse("")
         return cmd != ''
 
     def _client(self):