[four-in-a-row/arnaudb/wip/gtk4: 59/92] Replace GdkScreen by GdkDisplay.

[Arnaud B. <arnaudb src gnome org>]

commit 6b452ce979ec0488c19b8fc64f8c14b365beb823
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun Apr 19 16:46:56 2020 +0200

    Replace GdkScreen by GdkDisplay.

 src/game-window.vala | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/game-window.vala b/src/game-window.vala
index ce6b01a..a2bde68 100644
--- a/src/game-window.vala
+++ b/src/game-window.vala
@@ -71,9 +71,9 @@ private class GameWindow : AdaptativeWindow, AdaptativeWidget
         {
             CssProvider css_provider = new CssProvider ();
             css_provider.load_from_resource ((!) css_resource);
-            Gdk.Screen? gdk_screen = Gdk.Screen.get_default ();
-            if (gdk_screen != null) // else..?
-                StyleContext.add_provider_for_screen ((!) gdk_screen, css_provider, 
STYLE_PROVIDER_PRIORITY_APPLICATION);
+            Gdk.Display? gdk_display = Gdk.Display.get_default ();
+            if (gdk_display != null) // else..?
+                StyleContext.add_provider_for_display ((!) gdk_display, css_provider, 
STYLE_PROVIDER_PRIORITY_APPLICATION);
         }
 
         view = _view;