6lowpan: remove unnecessary break

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Werner Almesberger <werner@almesberger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ieee802154/6lowpan.c

@@ -440,7 +440,6 @@ lowpan_uncompress_udp_header(struct sk_buff *skb, struct udphdr *uh)
 		default:
 			pr_debug("ERROR: unknown UDP format\n");
 			goto err;
-			break;
 		}
 
 		pr_debug("uncompressed UDP ports: src = %d, dst = %d\n",