From 582b67a2f1dde4dab7276cce30c6c40ff929da18 Mon Sep 17 00:00:00 2001
From: Olivier Fourdan <ofourdan@redhat.com>
Date: Wed, 9 Jan 2019 11:52:18 +0100
Subject: [PATCH] window: Handle maximize when headless

When for some reason a window is maximized while the compositor is
headless, `window->monitor` will be NULL, so check for a NULL monitor
to avoid a NULL-pointer dereference.

Closes: https://gitlab.gnome.org/GNOME/mutter/issues/58

https://gitlab.gnome.org/GNOME/mutter/merge_requests/383
---
 src/core/window.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/window.c b/src/core/window.c
index 9a8a84a26..7f208c3a2 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -2848,7 +2848,7 @@ meta_window_maximize_internal (MetaWindow        *window,
   meta_window_recalc_features (window);
   set_net_wm_state (window);
 
-  if (window->monitor->in_fullscreen)
+  if (window->monitor && window->monitor->in_fullscreen)
     meta_display_queue_check_fullscreen (window->display);
 
   g_object_freeze_notify (G_OBJECT (window));