Fix for RPC getrawtransaction to avoid null exception (#707)
Fix for RPC getrawtransaction to avoid null exception (#707)

* Fix for RPC getrawtransaction to avoid null exception with non-segwit derivatives: bash, dash etc.

* Modified null check.

MetacoSA/NBitcoin,NicolasDorier/NBitcoin,MetacoSA/NBitcoin