packet: dont drop packet but consume it

When we need to clone skb, we dont drop a packet.
Call consume_skb() to not confuse dropwatch.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/packet/af_packet.c

@@ -1654,7 +1654,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
 			skb->data = skb_head;
 			skb->len = skb_len;
 		}
-		kfree_skb(skb);
+		consume_skb(skb);
 		skb = nskb;
 	}