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

src/generic/notebook.cpp

@@ -84,7 +84,7 @@ class WXDLLEXPORT wxNotebookTabView: public wxTabView
 DECLARE_DYNAMIC_CLASS(wxNotebookTabView)
 public:
     wxNotebookTabView(wxNotebook* notebook, long style = wxTAB_STYLE_DRAW_BOX | wxTAB_STYLE_COLOUR_INTERIOR);
-    ~wxNotebookTabView(void);
+    virtual ~wxNotebookTabView(void);
 
     // Called when a tab is activated
     virtual void OnTabActivate(int activateId, int deactivateId);