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

src/html/m_tables.cpp

@@ -125,6 +125,8 @@ private:
     // Computes minimal and maximal widths of columns. Needs to be called
     // only once, before first Layout(). 
     void ComputeMinMaxWidths();
+
+    DECLARE_NO_COPY_CLASS(wxHtmlTableCell)
 };