Steps to reproduce:

```
$ ./src/bitcoin-wallet -datadir=/tmp  info  -wallet=asdf
Wallet info
===========
Name: 
Format: bdb
Descriptors: no
Encrypted: no
HD (hd seed available): yes
Keypool Size: 2000
Transactions: 0
Address Book: 0
```

(See the mismatching wallet name!)

Compare to:

```
$ ./src/bitcoin-wallet -datadir=/tmp  -wallet=asdf info
Wallet info
===========
Name: asdf
Format: bdb
Descriptors: no
Encrypted: no
HD (hd seed available): yes
Keypool Size: 2000
Transactions: 0
Address Book: 0

#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <util/system.h>
#include <cstdint>
#include <string>
#include <vector>
namespace {
std::string GetArgumentName(const std::string& name)
{
    size_t idx = name.find('=');
    if (idx == std::string::npos) {
        idx = name.size();
    }
    return name.substr(0, idx);
}
} 
FUZZ_TARGET(system)