ipv6: call consume_skb() in frag/reassembly

Some kfree_skb() calls should be replaced by consume_skb() to avoid
drop_monitor/dropwatch false positives.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 36e04cf..54c5d2b 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -433,7 +433,7 @@
 		skb_morph(head, fq->q.fragments);
 		head->next = fq->q.fragments->next;
 
-		kfree_skb(fq->q.fragments);
+		consume_skb(fq->q.fragments);
 		fq->q.fragments = head;
 	}