windows DNS resolution: follow-up 9b0773cf2bf139eafe4a828c8964461d34ea9e23
windows DNS resolution: follow-up 9b0773cf2bf139eafe4a828c8964461d34ea9e23

related: #5176, #4421

prev was failing on systems where
IPv6 is not available but DNS can resolve AAAA records
(my artificial test environment with IPv6 disabled was also filtering AAAA DNS)

wakiyamap/electrum-mona,neocogent/electrum,pooler/electrum-ltc,spesmilo/electrum,vialectrum/vialectrum,spesmilo/electrum,neocogent/electrum,fujicoin/electrum-fjc,wakiyamap/electrum-mona,fujicoin/electrum-fjc,pooler/electrum-ltc,fujicoin/electrum-fjc,vialectrum/vialectrum,wakiyamap/electrum-mona,pooler/electrum-ltc,spesmilo/electrum,pooler/electrum-ltc,wakiyamap/electrum-mona,vialectrum/vialectrum,spesmilo/electrum,neocogent/electrum