[gtk+] Use x11-specific api to get at the screen

[Matthias Clasen <matthiasc src gnome org>]

commit 81cda3dcf78b463ab5b93597e0dd66f2bf53a49e
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 1 18:40:51 2017 -0400

    Use x11-specific api to get at the screen
    
    gdk_display_get_default_screen is going away.

 gtk/gtkwindow.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index ba99af8..e790399 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -4084,7 +4084,7 @@ gtk_window_supports_client_shadow (GtkWindow *window)
 #ifdef GDK_WINDOWING_X11
   if (GDK_IS_X11_DISPLAY (display))
     {
-      if (!gdk_x11_screen_supports_net_wm_hint (gdk_display_get_default_screen (display),
+      if (!gdk_x11_screen_supports_net_wm_hint (gdk_x11_display_get_screen (display),
                                                 gdk_atom_intern_static_string ("_GTK_FRAME_EXTENTS")))
         return FALSE;
     }