Re: [PATCH 18/20] object-file.c: free the "t.tag" in check_tag()

> Fix a memory leak that's been with us ever since c879daa2372 (Make
> hash-object more robust against malformed objects, 2011-02-05). With
> "HASH_FORMAT_CHECK" (used by "hash-object" and "replace") we'll parse
> tags into a throwaway variable on the stack, but weren't freeing the
> "item->tag" we might malloc() when doing so.
>
> Mark the tests that now pass in their entirety as passing under
> "SANITIZE=leak", which means we'll test them as part of the
> "linux-leaks" CI job.
>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>  object-file.c         | 1 +
>  t/t3800-mktag.sh      | 1 +
>  t/t5302-pack-index.sh | 2 ++
>  3 files changed, 4 insertions(+)
>
> diff --git a/object-file.c b/object-file.c
> index c1b71c28347..36ed6c3122c 100644
> --- a/object-file.c
> +++ b/object-file.c
> @@ -2331,6 +2331,7 @@ static void check_tag(const void *buf, size_t size)
>  	memset(&t, 0, sizeof(t));
>  	if (parse_tag_buffer(the_repository, &t, buf, size))
>  		die(_("corrupt tag"));
> +	free(t.tag);

>  }
>
>  static int index_mem(struct index_state *istate,
> diff --git a/t/t3800-mktag.sh b/t/t3800-mktag.sh
> index e3cf0ffbe59..d3e428ff46e 100755
> --- a/t/t3800-mktag.sh
> +++ b/t/t3800-mktag.sh
> @@ -4,6 +4,7 @@
>
>  test_description='git mktag: tag object verify test'
>
> +TEST_PASSES_SANITIZE_LEAK=true
>  . ./test-lib.sh
>
>  ###########################################################
> diff --git a/t/t5302-pack-index.sh b/t/t5302-pack-index.sh
> index b0095ab41d3..54b11f81c63 100755
> --- a/t/t5302-pack-index.sh
> +++ b/t/t5302-pack-index.sh
> @@ -4,6 +4,8 @@
>  #
>
>  test_description='pack index with 64-bit offsets and object CRC'
> +
> +TEST_PASSES_SANITIZE_LEAK=true
>  . ./test-lib.sh
>
>  test_expect_success 'setup' '