fix fee calculation issue
fix fee calculation issue

matiu/copay,janko33bd/copay,hideoussquid/aur-copay,msalcala11/copay,hideoussquid/aur-copay,msalcala11/copay,hideoussquid/aur-copay,Kirvx/copay,msalcala11/copay,Groestlcoin/GroestlPay,gabrielbazan7/copay,janko33bd/copay,cobit-wallet/cobit,matiu/copay,gabrielbazan7/copay,cobit-wallet/cobit,ObsidianCryptoVault/copay,gabrielbazan7/copay,Groestlcoin/GroestlPay,cmgustavo/copay,bitjson/copay,fr34k8/copay,bitjson/copay,ajp8164/copay,ObsidianCryptoVault/copay,cobit-wallet/cobit,ajp8164/copay,gabrielbazan7/copay,janko33bd/copay,Bitcoin-com/Wallet,matiu/copay,Bitcoin-com/Wallet,bitchk-wallet/copay,cmgustavo/copay,msalcala11/copay,matiu/copay,ajp8164/copay,cmgustavo/copay,fr34k8/copay,cmgustavo/copay,Bitcoin-com/Wallet,Kirvx/copay,fr34k8/copay,bitjson/copay,Groestlcoin/GroestlPay,Bitcoin-com/Wallet,bitchk-wallet/copay,bitchk-wallet/copay,fr34k8/copay,hideoussquid/aur-copay,ObsidianCryptoVault/copay,dabura667/copay,Kirvx/copay,ObsidianCryptoVault/copay,dabura667/copay,bitjson/copay,dabura667/copay,Kirvx/copay,Groestlcoin/GroestlPay