Fix an issue with creation of witness renewal transaction.
Fix an issue with creation of witness renewal transaction.

Invalid transactions were created in cases where an account had not yet witnessed for the first time.

nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official