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

/**
     * Return string argument or default value
     *
     * @param strArg Argument to get (e.g. "-foo")
     * @param strDefault (e.g. "1")
     * @return command-line argument or default value
     */
    std::string GetArg(const std::string& strArg, const std::string& strDefault) const;
    /**
     * Return integer argument or default value
     *
     * @param strArg Argument to get (e.g. "-foo")
     * @param nDefault (e.g. 1)
     * @return command-line argument (0 if invalid number) or default value
     */
    int64_t GetArg(const std::string& strArg, int64_t nDefault) const;
    /**
     * Return boolean argument or default value
     *
     * @param strArg Argument to get (e.g. "-foo")
     * @param fDefault (true or false)
     * @return command-line argument or default value
     */
    bool GetBoolArg(const std::string& strArg, bool fDefault) const;
    /**
     * Set an argument if it doesn't already have a value
     *
     * @param strArg Argument to set (e.g. "-foo")
     * @param strValue Value (e.g. "1")
     * @return true if argument gets set, false if it already had a value