In fnv_64_str(), replace u_register_t (which NetBSD doesn't have) with

Fnv32_t, since it's only going to store an 8 bit number anyway.

sys/sys/fnv_hash.h

@@ -58,7 +58,7 @@ static __inline Fnv64_t
 fnv_64_str(const char *str, Fnv64_t hval)
 {
 	const u_int8_t *s = (const u_int8_t *)str;
-	u_register_t c;		 /* 32 bit on i386, 64 bit on alpha,ia64 */
+	Fnv32_t c;
 
 	while ((c = *s++) != 0) {
 		hval *= FNV_64_PRIME;