File mutter-bsc1045440-remove-stray-assert.patch of Package mutter.4372

From fd41db64169f6e0b36d56e054967cb406e32fa74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Mon, 26 Jun 2017 17:56:36 +0200
Subject: [PATCH] screen: Remove stray assert

When the number of (static) workspaces decreases, we relocate windows
from extra workspaces before removing them. As removing a non-empty
workspace is not allowed, we assert that it doesn't contain any windows
before removing it.

However that assert is

 - pointless, because meta_workspace_remove() already asserts that
   the workspace is empty

 - wrong, because even empty workspaces contain windows that are set
   to show on all workspaces

Simply drop the assert to avoid a crash when trying to remove a workspace
while on-all-workspaces windows are present.

https://bugzilla.gnome.org/show_bug.cgi?id=784223

Index: mutter-3.20.3/src/core/screen.c
===================================================================
--- mutter-3.20.3.orig/src/core/screen.c
+++ mutter-3.20.3/src/core/screen.c
@@ -1203,7 +1203,6 @@ update_num_workspaces (MetaScreen *scree
     {
       MetaWorkspace *w = l->data;
 
-      g_assert (w->windows == NULL);
       meta_workspace_remove (w);
     }