Using Ubuntu 18.04.2 LTS, with up-to-date, self-compiled master.
When I run
`./bitcoind -regtest -whitebind=bla`
I expect a clean shutdown with `Error: Cannot resolve -whitebind address: 'bla'`.
However sometimes my node doesn't stop and freezes (shutdown never finishes). 
This happens ~30% of the time for me, both on testnet and regtest. 

I believe that this is because `torControlThread.join();` never returns if it the thread is stopped right after its creation - it is started right before the whitebind part in `AppInitMain()`. If I insert a sleep before whitebind parameters are processed in Step 12 of `AppInitMain()` (or if I just disable the TorControl thread) the error does not occur.

Could someone try to reproduce? I encountered this testing #16248, but it is not restricted to this branch.

*
 * @param maxsize Puts a maximum size limit on the file that is read. If the file is larger than this, truncated data
 *         (with len > maxsize) will be returned.
 */
static std::pair<bool,std::string> ReadBinaryFile(const fs::path &filename, size_t maxsize=std::numeric_limits<size_t>::max())
{
    FILE *f = fsbridge::fopen(filename, "rb");
    if (f == nullptr)
        return std::make_pair(false,"");
    std::string retval;
    char buffer[128];
    size_t n;
    while ((n=fread(buffer, 1, sizeof(buffer), f)) > 0) {
        
        
        if (ferror(f)) {
            fclose(f);
            return std::make_pair(false,"");
        }
        retval.append(buffer, buffer+n);
        if (retval.size() > maxsize)
            break;
    }
    fclose(f);
    return std::make_pair(true,retval);
}
/** Write contents of std::string to a file.
 * @return true on success.
 */
static bool WriteBinaryFile(const fs::path &filename, const std::string &data)