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/gtk1/cursor.h

@@ -34,7 +34,7 @@ public:
     wxCursor( const char bits[], int width, int  height,
               int hotSpotX=-1, int hotSpotY=-1,
               const char maskBits[] = NULL, const wxColour *fg = NULL, const wxColour *bg = NULL );
-    ~wxCursor();
+    virtual ~wxCursor();
     bool operator == ( const wxCursor& cursor ) const;
     bool operator != ( const wxCursor& cursor ) const;
     bool Ok() const;