[TCP]: Move mss variable in tcp_mtu_probing()

Down into the only scope where it is used.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/tcp_timer.c

@@ -116,8 +116,6 @@ static int tcp_orphan_retries(struct sock *sk, int alive)
 
 static void tcp_mtu_probing(struct inet_connection_sock *icsk, struct sock *sk)
 {
-	int mss;
-
 	/* Black hole detection */
 	if (sysctl_tcp_mtu_probing) {
 		if (!icsk->icsk_mtup.enabled) {
@@ -125,6 +123,8 @@ static void tcp_mtu_probing(struct inet_connection_sock *icsk, struct sock *sk)
 			tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
 		} else {
 			struct tcp_sock *tp = tcp_sk(sk);
+			int mss;
+
 			mss = tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low)/2;
 			mss = min(sysctl_tcp_base_mss, mss);
 			mss = max(mss, 68 - tp->tcp_header_len);