fix some unused variables warnings reported by Borland

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53493 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/winpars.cpp

@@ -477,7 +477,6 @@ void wxHtmlWinParser::AddPreBlock(const wxString& text)
 
         const wxString::const_iterator end = text.end();
         wxString::const_iterator copyFrom = text.begin();
-        size_t posFrom = 0;
         size_t pos = 0;
         int posColumn = m_posColumn;
         for ( wxString::const_iterator i = copyFrom; i != end; ++i, ++pos )
@@ -493,7 +492,6 @@ void wxHtmlWinParser::AddPreBlock(const wxString& text)
 
                 posColumn += expandTo;
                 copyFrom = i + 1;
-                posFrom = pos + 1;
             }
             else
             {