[SCTP]: More trivial sctp 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/tsnmap.c b/net/sctp/tsnmap.c
index ac4fae1..42d9498 100644
--- a/net/sctp/tsnmap.c
+++ b/net/sctp/tsnmap.c
@@ -401,13 +401,14 @@
 
 	/* Refresh the gap ack information. */
 	if (sctp_tsnmap_has_gap(map)) {
+		__u16 start, end;
 		sctp_tsnmap_iter_init(map, &iter);
 		while (sctp_tsnmap_next_gap_ack(map, &iter,
-						&map->gabs[gabs].start,
-						&map->gabs[gabs].end)) {
+						&start,
+						&end)) {
 
-			map->gabs[gabs].start = htons(map->gabs[gabs].start);
-			map->gabs[gabs].end = htons(map->gabs[gabs].end);
+			map->gabs[gabs].start = htons(start);
+			map->gabs[gabs].end = htons(end);
 			gabs++;
 			if (gabs >= SCTP_MAX_GABS)
 				break;