[libwnck/wip/muktupavels/modernize: 17/21] tasklist: avoid deprecated gdk_screen_get_number

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 366326e8366d45a7ed976192facaf263724af33b
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Nov 12 16:20:43 2016 +0200

    tasklist: avoid deprecated gdk_screen_get_number

 libwnck/tasklist.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libwnck/tasklist.c b/libwnck/tasklist.c
index 0504ac8..179bce2 100644
--- a/libwnck/tasklist.c
+++ b/libwnck/tasklist.c
@@ -1700,7 +1700,7 @@ wnck_tasklist_realize (GtkWidget *widget)
   tasklist = WNCK_TASKLIST (widget);
 
   gdkscreen = gtk_widget_get_screen (widget);
-  tasklist->priv->screen = wnck_screen_get (gdk_screen_get_number (gdkscreen));
+  tasklist->priv->screen = wnck_screen_get (gdk_x11_screen_get_screen_number (gdkscreen));
   g_assert (tasklist->priv->screen != NULL);
 
 #ifdef HAVE_STARTUP_NOTIFICATION