wlclock: Fix argv parse on musl

[orahcio]

Fix issue #62586 according FreeBSD patch.

Testing the changes

• I tested the changes in this PR: YES

Local build testing

• I built this PR locally for my native architecture, (x86_64-musl)
• I built this PR locally for these architectures (if supported. mark crossbuilds):

[ahesford]

Please provide a link the upstream issue you opened to document this problem and seek a resolution at the source.

[orahcio]

Please provide a link the upstream issue you opened to document this problem and seek a resolution at the source.

Hi @ahesford. Do you think it is a good idea contact the upstream? The original patch was submitted on FreeBSD on August 2024 and the last upstream change was four years ago. I can send an email to him, but I think FreeBSD staff did it two years ago.

Patch file provided as asked.

[ahesford]

The upstream origin should know about this issue and be asked to find a solution that works on more than glibc. We shouldn't be inventing our own bug fixes.

[orahcio]

@ahesford, Yes it is the ideal, I'll send an email. For now, we can merge the patch or we need to wait the upstream to fix that issue?

[ahesford]

We can carry the patch. Should this be musl-only? I don't know the significance of optind with glibc.

[orahcio]

I think this patch has no effect on glibc systems. But this issue affect just non glibc, because this the solution originally was purposed on a BSD.