[TCP]: tcp_write_xmit() tabbing cleanup

Put the main basic block of work at the top-level of
tabbing, and mark the TCP_CLOSE test with unlikely().
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/tcp_output.c

@@ -842,15 +842,17 @@ static inline void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp)
 static int tcp_write_xmit(struct sock *sk, int nonagle)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
+	struct sk_buff *skb;
 	unsigned int mss_now;
+	int sent_pkts;
 
 	/* If we are closed, the bytes will have to remain here.
 	 * In time closedown will finish, we empty the write queue and all
 	 * will be happy.
 	 */
-	if (sk->sk_state != TCP_CLOSE) {
-		struct sk_buff *skb;
-		int sent_pkts = 0;
+	if (unlikely(sk->sk_state == TCP_CLOSE))
+		return 0;
+
 
 	/* Account for SACKS, we may need to fragment due to this.
 	 * It is just like the real MSS changing on us midstream.
@@ -858,7 +860,7 @@ static int tcp_write_xmit(struct sock *sk, int nonagle)
 	 * IP options mid-stream.  Silly to do, but cover it.
 	 */
 	mss_now = tcp_current_mss(sk, 1);
-
+	sent_pkts = 0;
 	while ((skb = sk->sk_send_head) &&
 	       tcp_snd_test(sk, skb, mss_now,
 			    tcp_skb_is_last(sk, skb) ? nonagle :
@@ -888,8 +890,6 @@ static int tcp_write_xmit(struct sock *sk, int nonagle)
 	}
 
 	return !tp->packets_out && sk->sk_send_head;
-	}
-	return 0;
 }
 
 /* Push out any pending frames which were held back due to