[PATCH 4 of 7] contrib/perf: fix perfmergecalculate

[timeless]

# HG changeset patch
# User timeless <timeless at mozdev.org>
# Date 1448401456 0
#      Tue Nov 24 21:44:16 2015 +0000
# Node ID 8fe942905e529e04e6d0e19e5b62ee6458eb1266
# Parent  eefb1310ac0c34e935ca867c8aa7142ffe7cefc3
contrib/perf: fix perfmergecalculate

merge.calculateupdates requires an array of ancestors and followcopies

diff --git a/contrib/perf.py b/contrib/perf.py
--- a/contrib/perf.py
+++ b/contrib/perf.py
@@ -239,8 +239,8 @@
     def d():
         # acceptremote is True because we don't want prompts in the middle of
         # our benchmark
-        merge.calculateupdates(repo, wctx, rctx, ancestor, False, False, False,
-                               acceptremote=True)
+        merge.calculateupdates(repo, wctx, rctx, [ancestor], False, False,
+                               False, acceptremote=True, followcopies=True)
     timer(d)
     fm.end()