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/os2/pen.h

@@ -25,7 +25,7 @@ class WXDLLEXPORT wxPenRefData: public wxGDIRefData
 public:
     wxPenRefData();
     wxPenRefData(const wxPenRefData& rData);
-    ~wxPenRefData();
+    virtual ~wxPenRefData();
 
 protected:
     int                             m_nWidth;
@@ -54,7 +54,7 @@ public:
     wxPen( const wxBitmap& rStipple
           ,int             nWidth
          );
-    ~wxPen();
+    virtual ~wxPen();
 
     inline bool   operator == (const wxPen& rPen) const
         { return m_refData == rPen.m_refData; }