linux(4): Fixup options value validation in linux_waitid().

[dchagin]

fix strange mismerge

[emaste]

This is fine with me, although I wonder if it makes sense to do the check in linux_to_bsd_waitopts so the supported options are all in one place? But no objection from me if you prefer this.

sys/compat/linux/linux_misc.c

1094

Do we have to do anything to handle __WNOTHREAD?

[dchagin]

In D31554#711493, @emaste wrote:

This is fine with me, although I wonder if it makes sense to do the check in linux_to_bsd_waitopts so the supported options are all in one place? But no objection from me if you prefer this.

wait4 differs against waitid in options, see WEXITED

sys/compat/linux/linux_misc.c

1094

this will be the next change