fortify: Cleanup temp file also on non-successful exit

Ensure cleanup of test_fortify.sh's temporary file also on script
interruption, or some common signals.

Reported-by: WangYuli <wangyuli@aosc.io>
Closes: https://lore.kernel.org/linux-kbuild/20251112114725.287349-1-wangyuli@aosc.io/
Signed-off-by: Nicolas Schier <n.schier@avm.de>
1 file changed