fix CreateAssetUpdateTx for assettransfer
fix CreateAssetUpdateTx for assettransfer


Former-commit-id: 7e3d5aed25c468354c16184899f6d241d316affd
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin