message: Fix dispatch_mode_7 test.
diff: @@ -26,10 +26,10 @@ $pm->childFunc = function () use ($pm) {
  'worker_num' => 2,
  'dispatch_mode' => 7,
  'reload_async' => true,
  + 'log_level' => SWOOLE_LOG_WARNING
  ]);
  - $http->on('workerStart', function ($serv, $id) {
  - global $pm;
  + $http->on('workerStart', function () use ($pm) {
  $pm->wakeup();
  });
  