added missing consts and pass objects by const reference instead of by value (patch 1205869)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35665 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/fileconf.cpp

@@ -572,7 +572,7 @@ wxFileConfig::~wxFileConfig()
 // parse a config file
 // ----------------------------------------------------------------------------
 
-void wxFileConfig::Parse(wxTextBuffer& buffer, bool bLocal)
+void wxFileConfig::Parse(const wxTextBuffer& buffer, bool bLocal)
 {
   const wxChar *pStart;
   const wxChar *pEnd;