[LTP] execve05: add exit call when execve failed

[linuxtestproject.agent@gmail.com]

Hi Yeguojin,

On Fri Jun 5 00:01:12 2026, Yeguojin wrote:
> execve05: add exit call when execve failed

The Signed-off-by: tag is missing. It is mandatory for all LTP patches.

Verdict: Needs revision

Pre-existing issues:

testcases/kernel/syscalls/execve/execve05.c: The doc comment has a
duplicate reference -- "execve(2) :manpage:`execve(2)`" -- which
renders as "execve(2) execve(2)" in the documentation. The plain text
"execve(2)" before the :manpage: directive should be removed.

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