mark all dtors which are virtual because base class dtor is virtual explicitly virtual themselves

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41020 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/cursor.h

@@ -32,7 +32,7 @@ public:
         int hotSpotX = 0, int hotSpotY = 0);
 
   wxCursor(int cursor_type);
-  ~wxCursor();
+  virtual ~wxCursor();
 
 	bool CreateFromXpm(const char **bits) ;
   virtual bool Ok() const ;