Put AI_NUMERICHOST back where it belongs.

canohost.c

@@ -93,7 +93,7 @@ get_remote_hostname(int socket, int use_dns)
 	 */
 	memset(&hints, 0, sizeof(hints));
 	hints.ai_socktype = SOCK_DGRAM;	/*dummy*/
-	hints.ai_flags = NI_NUMERICHOST;
+	hints.ai_flags = AI_NUMERICHOST;
 	if (getaddrinfo(name, "0", &hints, &ai) == 0) {
 		logit("Nasty PTR record \"%s\" is set up for %s, ignoring",
 		    name, ntop);