fix May15 test
fix May15 test

dangershony/NStratis,NicolasDorier/NBitcoin,you21979/NBitcoin,MetacoSA/NBitcoin,HermanSchoenfeld/NBitcoin,stratisproject/NStratis,bitcoinbrisbane/NBitcoin,thepunctuatedhorizon/BrickCoinAlpha.0.0.1,lontivero/NBitcoin,MetacoSA/NBitcoin