# HG changeset patch
# User Joerg Sonnenberger <joerg@bec.de>
# Date 2021-03-28 23:35:54
# Node ID e7b4607d52e3cc850355b84a66f111766eb32ac1
# Parent  6dea77e195d2060ed7fd1839c7dec979782a0b3d

setdiscovery: simplify by using tiprev directly

tip() uses tiprev() and reads the node from it, so drop a layer of
indirection.

Differential Revision: https://phab.mercurial-scm.org/D10289

diff --git a/mercurial/setdiscovery.py b/mercurial/setdiscovery.py
--- a/mercurial/setdiscovery.py
+++ b/mercurial/setdiscovery.py
@@ -390,7 +390,7 @@ def findcommonheads(
         if audit is not None:
             audit[b'total-roundtrips'] = 1
 
-        if cl.tip() == nullid:
+        if cl.tiprev() == nullrev:
             if srvheadhashes != [nullid]:
                 return [nullid], True, srvheadhashes
             return [nullid], False, []