geoclue related crash on redshift-gtk statup

[Jason Yundt]

OS: Kubuntu 18.10 amd64
redshift-gtk package version: 1.12-2

Steps to Reproduce:
    1. $ redshift-gtk
    2. Once the "Allow 'Redshift' to access your location information?" notification pops up, wait 5 seconds.

Expected behavior:
    The location permission notification stays on screen.

Actual behavior:
   The notification fades away, and a redshift-gtk error message pops up. Iv'e attached a screenshot of the error message to the bottom of the post.

Workaround:
    Press the yes button on the permission notification immediately.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: redshift-gtk 1.12-2
ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
Uname: Linux 4.18.0-10-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Oct 20 07:59:25 2018
InstallationDate: Installed on 2018-10-20 (0 days ago)
InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
PackageArchitecture: all
SourcePackage: redshift
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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