sys/sysctl.h: Make self-contained

[obiwac]

Actually this would need sys/types.h to be included because sysctl.h makes use of u_int and intmax_t. Is it okay to include this?

[markj]

In D52443#1197695, @obiwac wrote:

Actually this would need sys/types.h to be included because sysctl.h makes use of u_int and intmax_t. Is it okay to include this?

Ah, yeah. I think that's ok. Let's include types.h in the _KERNEL block and leave the !_KERNEL block alone then.

[imp]

sys/sys/sysctl.h

44

why do wer need this?

[markj]

sys/sys/sysctl.h

44

Presumably we don't, it's only needed in the !_KERNEL case for __BEGIN_DECLS.