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=="`
if (!found_sep) {
            throw std::ios_base::failure("Separator is missing at the end of the global map");
        }
        
        if (!tx) {
            throw std::ios_base::failure("No unsigned transcation was provided");
        }
        
        unsigned int i = 0;
        while (!s.empty() && i < tx->vin.size()) {
            PSBTInput input;
            s >> input;
            inputs.push_back(input);
            
            if (input.non_witness_utxo && input.non_witness_utxo->GetHash() != tx->vin[i].prevout.hash) {
                throw std::ios_base::failure("Non-witness UTXO does not match outpoint hash");
            }
            ++i;
        }
        
        if (inputs.size() != tx->vin.size()) {
            throw std::ios_base::failure("Inputs provided does not match the number of inputs in transaction.");
        }
        
        i = 0;
        while (!s.empty() && i < tx->vout.size()) {
            PSBTOutput output;
            s >> output;
            outputs.push_back(output);
            ++i;