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
```
return InitError(Untranslated(ResolveErrMsg("externalip", strAddr)));
    }
    
    if (gArgs.IsArgSet("-asmap")) {
        fs::path asmap_path = fs::path(gArgs.GetArg("-asmap", ""));
        if (asmap_path.empty()) {
            asmap_path = DEFAULT_ASMAP_FILENAME;
        }
        if (!asmap_path.is_absolute()) {
            asmap_path = GetDataDir() / asmap_path;
        }
        if (!fs::exists(asmap_path)) {
            InitError(strprintf(_("Could not find asmap file %s"), asmap_path));
            return false;
        }
        std::vector<bool> asmap = CAddrMan::DecodeAsmap(asmap_path);
        if (asmap.size() == 0) {
            InitError(strprintf(_("Could not parse asmap file %s"), asmap_path));
            return false;
        }
        const uint256 asmap_version = SerializeHash(asmap);
        node.connman->SetAsmap(std::move(asmap));
        LogPrintf("Using asmap version %s for IP bucketing\n", asmap_version.ToString());
    } else {
        LogPrintf("Using /16 prefix for IP bucketing\n");
    }
#if ENABLE_ZMQ
    g_zmq_notification_interface = CZMQNotificationInterface::Create();
    if (g_zmq_notification_interface) {
        RegisterValidationInterface(g_zmq_notification_interface);