message: Fix the test of swoole_async_dns_lookup_coro
diff: @@ -5,13 +5,10 @@ swoole_coroutine: async dns lookup [2]
  --FILE--
  <?php
  require __DIR__ . '/../include/bootstrap.php';
  -
  -go(function () {
  - $host = swoole_async_dns_lookup_coro('www.' . uniqid() . '.' . uniqid(), 0.5);
  +Co\run(function () {
  + $host = swoole_async_dns_lookup_coro('www.' . uniqid() . '.' . uniqid(), 5);
  Assert::eq($host, false);
  - Assert::eq(swoole_last_error(), SWOOLE_ERROR_DNSLOOKUP_RESOLVE_TIMEOUT);
  - Swoole\Event::exit();
  + Assert::eq(swoole_last_error(), SWOOLE_ERROR_DNSLOOKUP_RESOLVE_FAILED);
  });
  -swoole_event_wait();
  ?>
  --EXPECT--
  