File mutter-handle-no-to-no-monitor.patch of Package mutter

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File mutter-handle-no-to-no-monitor.patch of Package mutter (Revision 098b31e9199edb6250229a0a38a823b3)

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From 8886e1bbdcb712d1e70873b2cccb7ab62e6a3eec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Sat, 7 Oct 2017 00:33:39 -0400
Subject: [PATCH] window: Handle updating from no to no monitor

When we received two hot plug events that both resulted in headless
configuration, we tried to find a new window monitor given the old.
That resulted in a null pointer dereference; avoid that by only trying
to find the same monitor if there was an old one.

https://bugzilla.gnome.org/show_bug.cgi?id=788607
---
 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 dc60a667c..c2d9869d2 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3793,7 +3793,7 @@ meta_window_update_for_monitors_changed (MetaWindow *window)
   new = find_monitor_by_winsys_id (window, window->preferred_output_winsys_id);
 
   /* Otherwise, try to find the old output on a new monitor */
-  if (!new)
+  if (old && !new)
     new = find_monitor_by_winsys_id (window, old->winsys_id);
 
   /* Fall back to primary if everything else failed */
-- 
2.14.2

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File mutter-handle-no-to-no-monitor.patch of Package mutter (Revision 098b31e9199edb6250229a0a38a823b3)

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