In #19015 it's been suggested that we add some new compiler warnings to our build. Some of these, such as `-Wunreachable-code-loop-increment`, generate warnings. We'll likely want to fix these up if we're going to turn these warnings on.

```bash
init.cpp:969:5: warning: loop will run at most once (loop increment never executed) [-Wunreachable-code-loop-increment]
    for (const auto& arg : gArgs.GetUnsuitableSectionOnlyArgs()) {
    ^~~
1 warning generated.
```

https://github.com/bitcoin/bitcoin/blob/aa8d76806c74a51ec66e5004394fe9ea8ff0fac4/src/init.cpp#L968-L972

If you want to build master, with `-Wunreachable-code-loop-increment`, you can use something like this:
```bash
./autogen.sh
./configure CXXFLAGS="-Wunreachable-code-loop-increment"
make check
```
{
        original += rhs.original;
        translated += rhs.translated;
        return *this;
    }
};
inline bilingual_str operator+(bilingual_str lhs, const bilingual_str& rhs)
{
    lhs += rhs;
    return lhs;
}
inline bilingual_str Untranslated(std::string original) { return {original, original}; }
namespace tinyformat {
template <typename... Args>
bilingual_str format(const bilingual_str& fmt, const Args&... args)
{
    return bilingual_str{format(fmt.original, args...), format(fmt.translated, args...)};
}
} 
const extern std::function<std::string(const char*)> G_TRANSLATION_FUN;
/**
 * Translation function.
 * If no translation function is set, simply return the input.
 */
inline bilingual_str _(const char* psz)
{
    return bilingual_str{psz, G_TRANSLATION_FUN ? (G_TRANSLATION_FUN)(psz) : psz};
}
#endif