read-cache.c: fix writing "link" index ext with null base oid

diff --git a/t/t5531-deep-submodule-push.sh b/t/t5531-deep-submodule-push.sh
index 39cb2c1c3489c25545ab3cd69706c0a21378c6b7..e2c37fd9785d2a47f85853a3611006609381c54c 100755 (executable)
--- a/t/t5531-deep-submodule-push.sh
+++ b/t/t5531-deep-submodule-push.sh
@@ -354,7 +354,7 @@ test_expect_success 'push succeeds if submodule has no remote and is on the firs
        git clone a a1 &&
        (
                cd a1 &&
-               git init b
+               git init b &&
                (
                        cd b &&
                        >junk &&