修复 in 问题

Application/Admin/Controller/AjaxController.class.php

@@ -91,6 +91,8 @@ class AjaxController extends ThinkController{
         $map = [];
         if ($game) {
             $map['game_id'] = ['in', $game];
+        } else {
+            $map['game_id'] = ['in', [-1]];
         }
         $data = M('Server', 'tab_')->field('id, server_name, server_id')->where($map)->group('server_name')->select();
         $this->AjaxReturn($data);