irda: Fix irda_getname() leak

irda_getname() can leak kernel memory to user.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/irda/af_irda.c

@@ -714,6 +714,7 @@ static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
 	struct sock *sk = sock->sk;
 	struct irda_sock *self = irda_sk(sk);
 
+	memset(&saddr, 0, sizeof(saddr));
 	if (peer) {
 		if (sk->sk_state != TCP_ESTABLISHED)
 			return -ENOTCONN;