# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 2016-08-05 18:00:30
# Node ID 1a29db79a98d112f2b24876db0ac81bdb40b6b99
# Parent  0dbd788a2dfdd8dc341f362a106a826c5a7eaf2a

sshserver: use `iter(callable, sentinel)` instead of while True

This is functionally equivalent, but is a little more concise.

diff --git a/mercurial/sshserver.py b/mercurial/sshserver.py
--- a/mercurial/sshserver.py
+++ b/mercurial/sshserver.py
@@ -69,11 +69,7 @@ class sshserver(wireproto.abstractserver
         pass
 
     def groupchunks(self, changegroup):
-        while True:
-            d = changegroup.read(4096)
-            if not d:
-                break
-            yield d
+        return iter(lambda: changegroup.read(4096), '')
 
     def sendresponse(self, v):
         self.fout.write("%d\n" % len(v))