[SCTP]: Don't bother setting sin_port in ->from_sk().

... the only caller will overwrite immediately

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index e6bb087..8e2b1e4 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -371,7 +371,7 @@
 static void sctp_v6_from_sk(union sctp_addr *addr, struct sock *sk)
 {
 	addr->v6.sin6_family = AF_INET6;
-	addr->v6.sin6_port = inet_sk(sk)->num;
+	addr->v6.sin6_port = 0;
 	addr->v6.sin6_addr = inet6_sk(sk)->rcv_saddr;
 }