Applied patch [ 808050 ] fixes for WXUNIVERSAL and UNICODE

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23672 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/ctrlrend.cpp

@@ -675,7 +675,11 @@ void wxControlRenderer::DrawItems(const wxListBox *lbox,
 
 void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
                                     size_t itemFirst, size_t itemLast,
+#if wxUSE_CHECKLISTBOX
                                     bool isCheckLbox)
+#else
+                                    bool WXUNUSED(isCheckLbox))
+#endif
 {
     // prepare for the drawing: calc the initial position
     wxCoord lineHeight = lbox->GetLineHeight();