warning fixes for BCC and OW (heavily modified patch 819146)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24196 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/helpfrm.cpp

@@ -454,7 +454,7 @@ bool wxHtmlHelpFrame::Create(wxWindow* parent, wxWindowID id,
         sizer->Add(m_SearchList, 1, wxALL | wxEXPAND, 2);
 
         m_NavigNotebook->AddPage(dummy, _("Search"));
-        m_SearchPage = notebook_page++;
+        m_SearchPage = notebook_page;
     }
 
     m_HtmlWin->Show(TRUE);