Merge "gd Scanning: Ignore non-anonymous advertising report with empty address"

    bool is_scannable = event_type & (1 << kScannableBit);

    bool is_scan_response = event_type & (1 << kScanResponseBit);

    bool is_legacy = event_type & (1 << kLegacyBit);

    // TODO handle anonymous advertisement (0xFF)

    if (address_type == (uint8_t)DirectAdvertisingAddressType::NO_ADDRESS) {

      scanning_callbacks_->OnScanResult(

          event_type,

          address_type,

          address,

          primary_phy,

          secondary_phy,

          advertising_sid,

          tx_power,

          rssi,

          periodic_advertising_interval,

          advertising_data);

      return;

    } else if (address == Address::kEmpty) {

      LOG_WARN("Receive non-anonymous advertising report with empty address, skip!");

      return;

    }

    AddressWithType address_with_type(address, (AddressType)address_type);

    if (is_legacy && is_scan_response && !advertising_cache_.Exist(address_with_type)) {