[patch] sctp: cleanup: remove unneeded null check

[Dan Carpenter <error27@gmail.com>]

"chunk" can never be null here.  We dereferenced it earlier in the
function and also at the start of the function we passed it to 
sctp_pack_cookie() which dereferences it.

This code has been around since the dawn of git history so if "chunk"
were ever null someone would have complained about it.

Signed-off-by: Dan Carpenter <error27@gmail.com>

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 17cb400..52352fc 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -470,8 +470,7 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
 	 *
 	 * [INIT ACK back to where the INIT came from.]
 	 */
-	if (chunk)
-		retval->transport = chunk->transport;
+	retval->transport = chunk->transport;
 
 nomem_chunk:
 	kfree(cookie);