TCP: Fix tcp_findlistner() in dual stack mode

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

net/tcp/tcp_timer.c

@@ -235,7 +235,11 @@ void tcp_timer(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn,
 
                   /* Find the listener for this connection. */
 
+#if defined(CONFIG_NET_IPv4) && defined(CONFIG_NET_IPv6)
+                  listener = tcp_findlistener(conn->lport, conn->domain);
+#else
                   listener = tcp_findlistener(conn->lport);
+#endif
                   if (listener != NULL)
                     {
                       /* We call tcp_callback() for the connection with