[PATCH STABLE] histedit: fix test-histedit-edit on vfat

[Durham Goode]

# HG changeset patch
# User Durham Goode <durham at fb.com>
# Date 1430849717 25200
#      Tue May 05 11:15:17 2015 -0700
# Branch stable
# Node ID 17736d09e2f251133e0b1d57055aa7f01b697a62
# Parent  41cd8171e58f991373dcd0b4897dc1e5978d42dd
histedit: fix test-histedit-edit on vfat

test-histedit-edit was broken because it relied on the HGEDITOR script being
executable. Instead, lets just execute 'sh' and pass it the script to run. This
seems to be the pattern followed in other tests.

diff --git a/tests/test-histedit-edit.t b/tests/test-histedit-edit.t
--- a/tests/test-histedit-edit.t
+++ b/tests/test-histedit-edit.t
@@ -71,15 +71,14 @@ edit the history
   When you are finished, run hg histedit --continue to resume.
 
 edit the plan via the editor
-  $ cat >> ../editplan.sh <<EOF
+  $ cat >> $TESTTMP/editplan.sh <<EOF
   > cat > \$1 <<EOF2
   > drop e860deea161a e
   > drop 652413bf663e f
   > drop 3c6a8ed2ebe8 g
   > EOF2
   > EOF
-  $ chmod a+x ../editplan.sh
-  $ HGEDITOR=../editplan.sh hg histedit --edit-plan
+  $ HGEDITOR="sh $TESTTMP/editplan.sh" hg histedit --edit-plan
   $ cat .hg/histedit-state
   v1
   055a42cdd88768532f9cf79daa407fc8d138de9b