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/dcprint.h

@@ -25,7 +25,7 @@ class WXDLLEXPORT wxPrinterDC: public wxDC
 #if wxUSE_PRINTING_ARCHITECTURE
   // Create a printer DC
   wxPrinterDC(const wxPrintData& printdata );
-  ~wxPrinterDC();
+  virtual ~wxPrinterDC();
 
     virtual bool StartDoc( const wxString& WXUNUSED(message) ) ;
     virtual void EndDoc(void) ;