[SCTP]: Set sk_err so that poll wakes up after a non-blocking connect failure.

Also fix some other cases where sk_err is not set for 1-1 style sockets.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
diff --git a/net/sctp/input.c b/net/sctp/input.c
index d117ebc..7523f4d 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -412,7 +412,7 @@
 	union sctp_addr daddr;
 	struct sctp_af *af;
 	struct sock *sk = NULL;
-	struct sctp_association *asoc = NULL;
+	struct sctp_association *asoc;
 	struct sctp_transport *transport = NULL;
 
 	*app = NULL; *tpp = NULL;
@@ -490,7 +490,7 @@
 	int type = skb->h.icmph->type;
 	int code = skb->h.icmph->code;
 	struct sock *sk;
-	struct sctp_association *asoc;
+	struct sctp_association *asoc = NULL;
 	struct sctp_transport *transport;
 	struct inet_sock *inet;
 	char *saveip, *savesctp;