[LTP] syscalls/mmap09: Drop hardcoded /tmp path

[linuxtestproject.agent@gmail.com]

Hi Darren,

On Sun, 26 Apr 2026, Darren Chang wrote:
> syscalls/mmap09: Drop hardcoded /tmp path

> -       fd = SAFE_OPEN("/tmp/mmaptest", O_RDWR | O_CREAT, 0666);
> +       fd = SAFE_OPEN("mmaptest", O_RDWR | O_CREAT, 0666);

Correct fix — .needs_tmpdir = 1 already chdirs into the temp directory,
so the relative path is the right approach.

Reviewed-by: LTP AI Reviewer <ltp-ai@noreply.github.com>

Pre-existing issues noticed in the surrounding code (not introduced
by this patch):

- mmap09.c:57 — cleanup() guards SAFE_CLOSE with `if (fd)`, but fd is a
  static int that defaults to 0 (stdin). Use `if (fd >= 0)` with fd
  initialized to -1.

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