[SCTP]: Trivial sctp endianness annotations.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index ed0445f..a5d7abb 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -868,7 +868,7 @@
 	struct list_head *entry, *pos;
 	struct sctp_transport *transport;
 	struct sctp_chunk *chunk;
-	__u32 key = htonl(tsn);
+	__be32 key = htonl(tsn);
 
 	match = NULL;