net: Remove __skb_insert() calls outside of skbuff internals.

This minor cleanup simplifies later changes which will convert
struct sk_buff and friends over to using struct list_head.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index 5061a26..7b23803 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -317,7 +317,7 @@
 	}
 
 	/* Insert before pos. */
-	__skb_insert(sctp_event2skb(event), pos->prev, pos, &ulpq->reasm);
+	__skb_queue_before(&ulpq->reasm, pos, sctp_event2skb(event));
 
 }
 
@@ -825,8 +825,7 @@
 
 
 	/* Insert before pos. */
-	__skb_insert(sctp_event2skb(event), pos->prev, pos, &ulpq->lobby);
-
+	__skb_queue_before(&ulpq->lobby, pos, sctp_event2skb(event));
 }
 
 static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,