ref_transaction_commit(): fix atomicity and avoid fd exhaustion

diff --git a/t/t5531-deep-submodule-push.sh b/t/t5531-deep-submodule-push.sh
index 445bb5fe26a4d8edc29223b1216625d484cd01bf..6507487c1a43bb407ed7598551364c4eb5a60cc6 100755 (executable)
--- a/t/t5531-deep-submodule-push.sh
+++ b/t/t5531-deep-submodule-push.sh
@@ -104,7 +104,7 @@ test_expect_success 'push fails when commit on multiple branches if one branch h
 '
 
 test_expect_success 'push succeeds if submodule has no remote and is on the first superproject commit' '
-       git init --bare a
+       git init --bare a &&
        git clone a a1 &&
        (
                cd a1 &&