fix #3248: locktime
fix #3248: locktime

neocogent/electrum,fyookball/electrum,neocogent/electrum,asfin/electrum,kyuupichan/electrum,romanz/electrum,wakiyamap/electrum-mona,fyookball/electrum,romanz/electrum,wakiyamap/electrum-mona,asfin/electrum,fujicoin/electrum-fjc,fujicoin/electrum-fjc,spesmilo/electrum,spesmilo/electrum,pooler/electrum-ltc,pooler/electrum-ltc,digitalbitbox/electrum,fyookball/electrum,kyuupichan/electrum,vialectrum/vialectrum,fujicoin/electrum-fjc,vialectrum/vialectrum,spesmilo/electrum,cryptapus/electrum,spesmilo/electrum,pooler/electrum-ltc,cryptapus/electrum,cryptapus/electrum,romanz/electrum,digitalbitbox/electrum,asfin/electrum,digitalbitbox/electrum,vialectrum/vialectrum,digitalbitbox/electrum,pooler/electrum-ltc,kyuupichan/electrum,wakiyamap/electrum-mona,wakiyamap/electrum-mona,neocogent/electrum