No changes, just simplify the code using wx2stc() a little.

Assign wx2stc() return value to a suitably const variable instead of using
ugly casts to get rid of constness.

Also use wxCharBuffer/char* explicitly inside explicit wxUSE_UNICODE checks,
using wxWX2MBbuf here doesn't gain us anything and just confuses the reader of
this code.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71429 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/stc/PlatWX.cpp

@@ -1583,7 +1583,7 @@ wxString stc2wx(const char* str)
 }
 
 
-const wxWX2MBbuf wx2stc(const wxString& str)
+wxWX2MBbuf wx2stc(const wxString& str)
 {
     const wchar_t* wcstr = str.c_str();
     size_t wclen         = str.length();