Fixed prometheus service exit without starting

import com.ongres.pgio.main.version.Version;

import fi.iki.elonen.NanoHTTPD;

import joptsimple.OptionException;

import joptsimple.OptionParser;

import joptsimple.OptionSet;

import java.time.Instant;

import java.util.Optional;

import java.util.Scanner;

import java.util.concurrent.TimeUnit;

import java.util.function.Consumer;

import java.util.function.Function;

    return message;

  }

  private static void runPrometheusService(Config config) throws IOException {

  private static void runPrometheusService(Config config) throws Exception {

    PrometheusService service = new PrometheusService(config);

    service.start(NanoHTTPD.SOCKET_READ_TIMEOUT, false);

    while (true) {

      TimeUnit.MICROSECONDS.sleep(20);

    }

  }

  private static void runCollector(Config config) throws Exception, InterruptedException {