修复处于Rom列表UI中时,如果Rom列表为空,呼出侧边栏报错的问题,在这种情况下将无法呼出侧边栏

AxibugEmuOnline.Client/Assets/Script/AppMain/UI/GamesUI/RomListMenuItem.cs

@@ -59,7 +59,10 @@ namespace AxibugEmuOnline.Client
 
 
         protected override void OnCmdOptionMenu()
-        {
+        {
+            var thirdMenuGroup = SubMenuItemGroup as ThirdMenuRoot;
+            if (thirdMenuGroup.itemGroup.DataList == null || thirdMenuGroup.itemGroup.DataList.Count == 0) return;
+
             OverlayManager.PopSideBar(m_options);
         }