econet: Fix econet_getname() leak

econet_getname() can leak kernel memory to user.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 2e1f836..f0bbc57 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -520,6 +520,7 @@
 	if (peer)
 		return -EOPNOTSUPP;
 
+	memset(sec, 0, sizeof(*sec));
 	mutex_lock(&econet_mutex);
 
 	sk = sock->sk;