Steps to reproduce:

* Build with `integer` sanitizer
* `UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" ./src/qt/bitcoin-qt`
* Enter into the RPC debug console: `decodepsbt "cHNidP8BAKOro2MDAwMDA5ggCAAA////CQAtAAD+///1AAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJAAAAAAAAAAAAAAAAAAAAAAAAAD+///1Zm9ybmV3nWx1Y2vmelLmegAAAAAAAAAAAAAAAAAAAAMKAwMDAwMDAwMDAwMACvMBA3FkAAAAAAAAAAAABAAlAAAAAAAAACEWDQ0zDQ0NDQ0NDQ0NCwEAAH9/f39/fwMAAABNo6P///kAAA=="`
Unserialize(s);
    }
};
struct PSBTOutput
{
    CScript redeem_script;
    CScript witness_script;
    std::map<CPubKey, KeyOriginInfo> hd_keypaths;
    XOnlyPubKey m_tap_internal_key;
    std::optional<TaprootBuilder> m_tap_tree;
    std::map<XOnlyPubKey, std::pair<std::set<uint256>, KeyOriginInfo>> m_tap_bip32_paths;
    std::map<std::vector<unsigned char>, std::vector<unsigned char>> unknown;
    std::set<PSBTProprietary> m_proprietary;
    bool IsNull() const;
    void FillSignatureData(SignatureData& sigdata) const;
    void FromSignatureData(const SignatureData& sigdata);
    void Merge(const PSBTOutput& output);
    PSBTOutput() {}