more changes to make wx compile without implicit wxString->char* conversion (for STL build)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46553 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/treectrl.cpp

@@ -934,7 +934,7 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
     {
         if ( item == m_idEdited )
         {
-            ::SetWindowText(hwndEdit, text);
+            ::SetWindowText(hwndEdit, text.wx_str());
         }
     }
 }