notes tests: don't ignore "git" exit code
Change a fragile test pattern that's been with us ever since these tests were introduced in [1], [2] and [3] to properly return the exit code of the failing command on failure. Because of this I'd marked this test as passing under SANITIZE=leak in [4] and [5]. We need to remove those annotations as these tests will no longer pass. 1. 9081a421a6d (checkout: fix "branch info" memory leaks, 2021-11-16) 2. 0057c0917d3 (Add selftests verifying that we can parse notes trees with various fanouts, 2009-10-09) 3. 048cdd4665e (t3305: Verify that adding many notes with git-notes triggers increased fanout, 2010-02-13) 4. ca089724952 (leak tests: mark some notes tests as passing with SANITIZE=leak, 2021-10-31) 5. 9081a421a6d (checkout: fix "branch info" memory leaks, 2021-11-16) Signed-off-by: Junio C Hamano <gitster@pobox.com>