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/classic/brush.h

@@ -35,7 +35,7 @@ public:
     wxBrush(short macThemeBrush ) ;
     wxBrush(const wxColour& col, int style = wxSOLID);
     wxBrush(const wxBitmap& stipple);
-    ~wxBrush();
+    virtual ~wxBrush();
 
     virtual void SetColour(const wxColour& col)  ;
     virtual void SetColour(unsigned char r, unsigned char g, unsigned char b)  ;