Reported by @kallewoof here: https://github.com/bitcoin/bitcoin/pull/13917#issuecomment-412459298

```
$ ./bitcoin-cli createpsbt "[]" "[{\"$(./bitcoin-cli getnewaddress)\":0.01}]"
cHNidP8BACoCAAAAAAFAQg8AAAAAABepFG6Rty1Vk+fUOR4v9E6R6YXDFkHwhwAAAAAAAA==
$ ./bitcoin-cli decodepsbt cHNidP8BACoCAAAAAAFAQg8AAAAAABepFG6Rty1Vk+fUOR4v9E6R6YXDFkHwhwAAAAAAAA==
error code: -22
error message:
TX decode failed CDataStream::read(): end of data: unspecified iostream_category error
```

while(!s.empty()) {
            
            std::vector<unsigned char> key;
            s >> key;
            
            
            if (key.empty()) return;
            
            unsigned char type = key[0];
            
            switch(type) {
                case PSBT_IN_NON_WITNESS_UTXO:
                    if (non_witness_utxo) {
                        throw std::ios_base::failure("Duplicate Key, input non-witness utxo already provided");
                    } else if (key.size() != 1) {
                        throw std::ios_base::failure("Non-witness utxo key is more than one byte type");
                    }
                    UnserializeFromVector(s, non_witness_utxo);
                    break;
                case PSBT_IN_WITNESS_UTXO:
                    if (!witness_utxo.IsNull()) {
                        throw std::ios_base::failure("Duplicate Key, input witness utxo already provided");
                    } else if (key.size() != 1) {
                        throw std::ios_base::failure("Witness utxo key is more than one byte type");
                    }
                    UnserializeFromVector(s, witness_utxo);