fix inet_ntop(3) prototype; ok millert@ libc to be bumbed very soon

src/include/arpa/inet.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: inet.h,v 1.10 2004/01/22 21:48:02 espie Exp $	*/
+/*	$OpenBSD: inet.h,v 1.11 2008/12/09 19:38:38 otto Exp $	*/
 
 /*
  * ++Copyright++ 1983, 1993
@@ -84,7 +84,7 @@ int		 inet_net_pton(int, const char *, void *, size_t)
 			__attribute__((__bounded__(__string__,3,4)));
 char		*inet_ntoa(struct in_addr);
 int		 inet_pton(int, const char *, void *);
-const char	*inet_ntop(int, const void *, char *, size_t)
+const char	*inet_ntop(int, const void *, char *, socklen_t)
 			__attribute__ ((__bounded__(__string__,3,4)));
 unsigned int	 inet_nsap_addr(const char *, unsigned char *, int);
 char		*inet_nsap_ntoa(int, const unsigned char *, char *);