Fixed bug that multiplex connection don't close after running test cases. (#4474)

Author: limingxinleo

co-phpunit

@@ -1,5 +1,5 @@
 #!/usr/bin/env php
-<?php 
+<?php
 declare (strict_types=1);
 /*
  * This file is part of PHPUnit.
@@ -40,5 +40,6 @@ Swoole\Coroutine::set(['hook_flags' => SWOOLE_HOOK_ALL, 'exit_condition' => func
 Swoole\Coroutine\run(function () use(&$code) {
     $code = PHPUnit\TextUI\Command::main(false);
     Swoole\Timer::clearAll();
+    Hyperf\Utils\Coordinator\CoordinatorManager::until(Hyperf\Utils\Coordinator\Constants::WORKER_EXIT)->resume();
 });
-die($code);
+die($code);