tests: Fuzz currently uncovered code path in TxToUniv(...)
tests: Fuzz currently uncovered code path in TxToUniv(...)

Former-commit-id: a6fdc2c561d9f663f2b9ca49def4c6df7d55d766
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin