sctp: fix oops when updating retransmit path with DEBUG on

commit fbdf501c9374966a56829ecca3a7f25d2b49a305
sctp: Do no select unconfirmed transports for retransmissions

Introduced the initial falt.

commit d598b166ced20d9b9281ea3527c0e18405ddb803
sctp: Make sure we always return valid retransmit path

Solved the problem, but forgot to change the DEBUG statement.
Thus it was still possible to dereference a NULL pointer.

Signed-off-by: Wei Yongjun <[e-mail]>
Signed-off-by: Vlad Yasevich <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/sctp/associola.c

···
 
 	if (t)
 		asoc->peer.retran_path = t;
+	else
+		t = asoc->peer.retran_path;
 
 	SCTP_DEBUG_PRINTK_IPADDR("sctp_assoc_update_retran_path:association"
 				 " %p addr: ",