[PATCH v3 1/8] merge tests: don't ignore "rev-parse" exit code in helper

[Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>]

Change the verify_mergeheads() helper the check the exit code of "git
rev-parse".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 t/t7600-merge.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index 7c3f6ed9943..060e145957f 100755
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -105,7 +105,7 @@ verify_mergeheads () {
 	test_write_lines "$@" >mergehead.expected &&
 	while read sha1 rest
 	do
-		git rev-parse $sha1
+		git rev-parse $sha1 || return 1
 	done <.git/MERGE_HEAD >mergehead.actual &&
 	test_cmp mergehead.expected mergehead.actual
 }
-- 
2.39.0.rc1.981.gf846af54b4b