Compilation fixes for wxUSE_STL == 1 and for wxUSE_UNICODE == 1.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24639 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/stc/stc.cpp

@@ -2144,20 +2144,16 @@ bool wxStyledTextCtrl::LoadFile(const wxString& filename)
     if (file.IsOpened())
     {
         wxString contents;
-#if wxUSE_UNICODE
-        wxMemoryBuffer buffer;
-#else
-        wxString buffer;
-#endif
         off_t len = file.Length();
         if (len > 0)
         {
-            void *bufptr = buffer.GetWriteBuf(len);
-            success = (file.Read(bufptr, len) == len);
-            buffer.UngetWriteBuf(len);
 #if wxUSE_UNICODE
+            wxMemoryBuffer buffer(len);
+            success = (file.Read(buffer.GetData(), len) == len);
             contents = wxString(buffer, *wxConvCurrent);
 #else
+            wxString buffer;
+            success = (file.Read(wxStringBuffer(buffer, len), len) == len);
             contents = buffer;
 #endif
         }