lnhtlc: also check received htlcs when validating commitment sigs
lnhtlc: also check received htlcs when validating commitment sigs

pooler/electrum-ltc,spesmilo/electrum,pooler/electrum-ltc,vialectrum/vialectrum,spesmilo/electrum,wakiyamap/electrum-mona,pooler/electrum-ltc,pooler/electrum-ltc,wakiyamap/electrum-mona,spesmilo/electrum,spesmilo/electrum,wakiyamap/electrum-mona,vialectrum/vialectrum,vialectrum/vialectrum,wakiyamap/electrum-mona