[UTXO-BUG] reject negative fees in transfer validation#2063

Scottcjn merged 1 commit intoScottcjn:mainScottcjn/Rustchain:mainfrom

createkr:sec/issue2819-utxo-negative-feecreatekr/Rustchain:sec/issue2819-utxo-negative-feeCopy head branch name to clipboard