use AllocExclusive in wxImage

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39766 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/image.h

@@ -393,6 +393,9 @@ protected:
     // note that index must be multiplied by 3 when using it with RGB array
     long XYToIndex(int x, int y) const;
 
+    virtual wxObjectRefData* CreateRefData() const;
+    virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const;
+
 private:
     friend class WXDLLEXPORT wxImageHandler;