tests: Fuzz DecodeBase64PSBT(...)
tests: Fuzz DecodeBase64PSBT(...)

Former-commit-id: c3b0bbe64215f91df64f48e0e62357bf7817a3c5
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin