Merge "[adb] Check for null in mdns connect info."

std::optional<MdnsInfo> mdns_get_connect_service_info(std::string_view name) {

    CHECK(!name.empty());

    // only adb server creates these registries

    if (!ResolvedService::sAdbTransportServices && !ResolvedService::sAdbSecureConnectServices) {

        return std::nullopt;

    }

    CHECK(ResolvedService::sAdbTransportServices);

    CHECK(ResolvedService::sAdbSecureConnectServices);

    auto mdns_instance = mdns::mdns_parse_instance_name(name);

    if (!mdns_instance.has_value()) {

        D("Failed to parse mDNS name [%s]", name.data());