interpret_nth_last_branch(): avoid traversing the reflog twice

diff --git a/t/t3020-ls-files-error-unmatch.sh b/t/t3020-ls-files-error-unmatch.sh
index f4da869932e40429f94d19a9cf2e18dc1e838f0a..f4066cbc090a8fd0f6a528eed65d16d705c1bb18 100755 (executable)
--- a/t/t3020-ls-files-error-unmatch.sh
+++ b/t/t3020-ls-files-error-unmatch.sh
@@ -13,11 +13,11 @@ line.
 
 touch foo bar
 git update-index --add foo bar
-git-commit -m "add foo bar"
+git commit -m "add foo bar"
 
 test_expect_success \
     'git ls-files --error-unmatch should fail with unmatched path.' \
-    '! git ls-files --error-unmatch foo bar-does-not-match'
+    'test_must_fail git ls-files --error-unmatch foo bar-does-not-match'
 
 test_expect_success \
     'git ls-files --error-unmatch should succeed eith matched paths.' \