string.h defines strmode with a mode_t argument. POSIX states that one
must include sys/types.h to get mode_t, so do that here. This makes musl
happier. We know that sys/types.h will include sys/cdefs.h, so just
replace the latter with the former.
Co-authored-by: Val Packett <val@packett.cool>
Sponsored by: Netflix
Pull Request: https://github.com/freebsd/freebsd-src/pull/1066