net: sock_edemux() should take care of timewait sockets

sock_edemux() can handle either a regular socket or a timewait socket
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/sock.c

@@ -1523,7 +1523,12 @@ EXPORT_SYMBOL(sock_rfree);
 
 void sock_edemux(struct sk_buff *skb)
 {
-	sock_put(skb->sk);
+	struct sock *sk = skb->sk;
+
+	if (sk->sk_state == TCP_TIME_WAIT)
+		inet_twsk_put(inet_twsk(sk));
+	else
+		sock_put(sk);
 }
 EXPORT_SYMBOL(sock_edemux);