Function _chkhook

freebsd/netgraph/netgraph.h:189–198

				int line);

static __inline void
_chkhook(hook_p hook, char *file, int line)
{
	if (hook->hk_magic != HK_MAGIC) {
		printf("Accessing freed ");
		dumphook(hook, file, line);
	}
	hook->lastline = line;
	hook->lastfile = file;
}

static __inline void
_ng_hook_ref(hook_p hook, char * file, int line)