http3::accept_hashkey_flatten_address missing break in switch/case
@@ -360,6 +360,7 @@ static uint8_t *accept_hashkey_flatten_address(uint8_t *p, quicly_address_t *add
break;
case AF_UNSPEC:
*p++ = 0;
+ break;
default:
h2o_fatal("unknown protocol family");
break;
