[gtk+] gtkclipboard-quartz: use accessors and add missing include

[Kristian Rietveld <kristian src gnome org>]

commit 4a6c50c2989a703faee31ecc60751bb5b2bfb4ee
Author: Kristian Rietveld <kris gtk org>
Date:   Wed Dec 22 15:46:10 2010 +0100

    gtkclipboard-quartz: use accessors and add missing include

 gtk/gtkclipboard-quartz.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkclipboard-quartz.c b/gtk/gtkclipboard-quartz.c
index f433070..a77d443 100644
--- a/gtk/gtkclipboard-quartz.c
+++ b/gtk/gtkclipboard-quartz.c
@@ -31,6 +31,7 @@
 #include "gtkmarshalers.h"
 #include "gtkintl.h"
 #include "gtktextbuffer.h"
+#include "gtkselectionprivate.h"
 #include "gtkquartz.h"
 
 
@@ -252,7 +253,7 @@ gtk_clipboard_get_for_display (GdkDisplay *display,
 			       GdkAtom     selection)
 {
   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
-  g_return_val_if_fail (!display->closed, NULL);
+  g_return_val_if_fail (!gdk_display_is_closed (display), NULL);
 
   return clipboard_peek (display, selection, FALSE);
 }