message: fix ignore ipv6
diff: @@ -136,6 +136,7 @@ namespace eosio { namespace client { namespace http {
  for(const auto& r : result) {
  const auto& addr = r.endpoint().address();
  + if (addr.is_v6()) continue;
  uint16_t port = r.endpoint().port();
  resolved_addresses.emplace_back(addr.to_string());
  is_loopback = is_loopback && addr.is_loopback();
  