use DECLARE_NO_COPY_CLASS() where applicable (patch 633384)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18525 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/ole/droptgt.h

@@ -69,6 +69,8 @@ private:
 
     wxIDropTarget *m_pIDropTarget; // the pointer to our COM interface
     IDataObject   *m_pIDataSource; // the pointer to the source data object
+
+    DECLARE_NO_COPY_CLASS(wxDropTarget)
 };
 
 #endif  //_WX_OLEDROPTGT_H