read-cache.c: remove implicit dependency on the_index

diff --git a/t/t1507-rev-parse-upstream.sh b/t/t1507-rev-parse-upstream.sh
index 349f6e10af9ea64a0e874b863f784feab4d12386..fa3e4996418d6d78afa31e9be19b6c77b22cd819 100755 (executable)
--- a/t/t1507-rev-parse-upstream.sh
+++ b/t/t1507-rev-parse-upstream.sh
@@ -138,8 +138,7 @@ test_expect_success 'branch -d other@{u}' '
        git checkout -t -b other master &&
        git branch -d @{u} &&
        git for-each-ref refs/heads/master >actual &&
-       >expect &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'checkout other@{u}' '