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
```
if (gArgs.GetBoolArg("-txindex", DEFAULT_TXINDEX)) {
        g_txindex = MakeUnique<TxIndex>(nTxIndexCache, false, fReindex);
        g_txindex->Start();
    }
    for (const auto& filter_type : g_enabled_filter_types) {
        InitBlockFilterIndex(filter_type, filter_index_cache, false, fReindex);
        GetBlockFilterIndex(filter_type)->Start();
    }
    
    for (const auto& client : node.chain_clients) {
        if (!client->load()) {
            return false;
        }
    }
    
    
    
    if (fPruneMode) {
        LogPrintf("Unsetting NODE_NETWORK on prune mode\n");
        nLocalServices = ServiceFlags(nLocalServices & ~NODE_NETWORK);
        if (!fReindex) {
            LOCK(cs_main);
            for (CChainState* chainstate : chainman.GetAll()) {
                uiInterface.InitMessage(_("Pruning blockstore...").translated);
                chainstate->PruneAndFlush();
            }
        }
    }
    if (chainparams.GetConsensus().SegwitHeight != std::numeric_limits<int>::max()) {