netfilter: remove unnecessary break after return

Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/netfilter/ip6t_ipv6header.c

@@ -94,7 +94,6 @@ ipv6header_mt6(const struct sk_buff *skb, struct xt_action_param *par)
 			break;
 		default:
 			return false;
-			break;
 		}
 
 		nexthdr = hp->nexthdr;