Fix saving states freezing up emulation

Only for about half a second but noticeable nonetheless

Source/Core/DolphinQt/MenuBar.h

@@ -37,7 +37,6 @@ public:
 
   explicit MenuBar(QWidget* parent = nullptr);
 
-  void UpdateStateSlotMenu();
   void UpdateToolsMenu(bool emulation_started);
 
   QMenu* GetListColumnsMenu() const { return m_cols_menu; }
@@ -140,6 +139,8 @@ private:
   void AddJITMenu();
   void AddSymbolsMenu();
 
+  void UpdateStateSlotMenu();
+
   void InstallWAD();
   void ImportWiiSave();
   void ExportWiiSaves();