Fixed server example on Mac

lib/net/net_mac.q

@@ -4,7 +4,7 @@ bind(socket Int, port Int) -> Int {
 	addr := new(sys.sockaddr_in_bsd)
 	addr.sin_family = 2
 	addr.sin_port = port
-	err := sys.bind(socket, addr, 20)
+	err := sys.bind(socket, addr, 16)
 	delete(addr)
 	return err
 }