Compile fix

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@54430 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listctrl.cpp

@@ -1409,7 +1409,7 @@ void wxListCtrl::InitEditControl(WXHWND hWnd)
 wxTextCtrl* wxListCtrl::EditLabel(long item, wxClassInfo* textControlClass)
 {
     wxCHECK_MSG( textControlClass->IsKindOf(CLASSINFO(wxTextCtrl)), NULL,
-                  "control used for label editing must be a wxTextCtrl" );
+                  wxT("control used for label editing must be a wxTextCtrl") );
 
     // ListView_EditLabel requires that the list has focus.
     SetFocus();