fix(build): Fix building on OpenBSD

[brad0]

Fixes #5000

[linux-foundation-easycla]

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• ✅ login: brad0 / name: Brad Smith (51328a0)

[lgritz]

This looks good, but it needs a DCO sign-off.

The easiest way to accomplish that is

git commit --amend -s

And just save. The -s will append the signed-off-by line with your name and email signifying that you agree with the DCO.

Then git push origin typedesc_openbsd --force

ought to do it.

Thanks.

[lgritz]

LGTM. Thanks for the fix.