From 4152e90e7e94d5eccc6feac1ea500d73d9d28db8 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 2 Aug 2020 22:43:48 -0400
Subject: [PATCH] x11: Ignore stray DestroyNotify events

There's no use in making a delete event with a
NULL surface. Just ignore such events.

Fixes: #3006
---
 gdk/x11/gdkdisplay-x11.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gdk/x11/gdkdisplay-x11.c b/gdk/x11/gdkdisplay-x11.c
index e895a07867..a2bcefa67d 100644
--- a/gdk/x11/gdkdisplay-x11.c
+++ b/gdk/x11/gdkdisplay-x11.c
@@ -795,7 +795,8 @@ gdk_x11_display_translate_event (GdkEventTranslator *translator,
 
       if (!is_substructure)
 	{
-          event = gdk_delete_event_new (surface);
+          if (surface)
+            event = gdk_delete_event_new (surface);
 
 	  if (surface && GDK_SURFACE_XID (surface) != x11_screen->xroot_window)
 	    gdk_surface_destroy_notify (surface);