Fix: balance to show in wallet details if is undefined
Fix: balance to show in wallet details if is undefined

msalcala11/copay,matiu/copay,cmgustavo/copay,gabrielbazan7/copay,fr34k8/copay,gabrielbazan7/copay,cmgustavo/copay,fr34k8/copay,matiu/copay,gabrielbazan7/copay,cmgustavo/copay,fr34k8/copay,matiu/copay,fr34k8/copay,cmgustavo/copay,msalcala11/copay,msalcala11/copay,gabrielbazan7/copay,msalcala11/copay,matiu/copay