update-notifier crashes on wayland

[Jean-Baptiste Lallement]

artful desktop (20170710)

Test Case
1. Run update-notifier

Expected result
It runs

Actual result
It crashes with this error
https://errors.ubuntu.com/bucket/?id=failed%3A/usr/bin/update-notifier%3A11%3A/lib/x86_64-linux-gnu/libglib-2.0.so.0.5303.0%2B38e89%3A/usr/lib/x86_64-linux-gnu/libgdk-3.so.0.2200.15%2B72acc%3A/usr/bin/update-notifier%2B6892%3A/usr/bin/update-notifier%2B5a09

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: update-notifier 3.181
ProcVersionSignature: Ubuntu 4.10.0-26.30-generic 4.10.17
Uname: Linux 4.10.0-26-generic x86_64
ApportVersion: 2.20.5-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME
Date: Mon Jul 10 15:14:57 2017
InstallationDate: Installed on 2013-09-03 (1405 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902)
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: update-notifier
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.