marco crashed with SIGSEGV in meta_display_list_windows()

[Ross McLean]

Crash occured whilst using Compiz and CCSM,, therefor could possible be irrelevant.

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: marco 1.22.3-0ubuntu2
ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0
Uname: Linux 5.3.0-13-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: MATE
Date: Tue Oct 8 18:06:25 2019
ExecutablePath: /usr/bin/marco
InstallationDate: Installed on 2019-10-06 (2 days ago)
InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Beta amd64 (20190926.2)
ProcCmdline: marco
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f3cabd22de1 <meta_display_list_windows+17>: mov 0x388(%rdi),%rdi
 PC (0x7f3cabd22de1) ok
 source "0x388(%rdi)" (0x00000388) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: marco
StacktraceTop:
 meta_display_list_windows () from /lib/x86_64-linux-gnu/libmarco-private.so.2
 meta_display_queue_retheme_all_windows () from /lib/x86_64-linux-gnu/libmarco-private.so.2
 ?? () from /lib/x86_64-linux-gnu/libmarco-private.so.2
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: marco crashed with SIGSEGV in meta_display_list_windows()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
separator:

[Apport retracing service (apport)]

StacktraceTop:
 meta_display_list_windows (display=0x0) at core/display.c:823
 meta_display_queue_retheme_all_windows (display=<optimized out>) at core/display.c:4164
 emit_changed (pref=META_PREF_THEME) at core/prefs.c:840
 changed_idle_handler (data=<optimized out>) at core/prefs.c:866
 g_main_context_dispatch () from /tmp/apport_sandbox_a9pdxfao/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6200.0