Chatty crashes if open before SIM activates

If you power on the devkit, immediately launch Chatty before the sim activates, it will crash shortly after the SIM activates.

Reproduction steps:

1. power one devkit with SIM
2. unlock
3. launch chatty (before SIM activates)
4. wait for SIM to activate
5. witness crash

chatty-crash-when-sim-activates-2019-06-08

Package: chatty
Status: install ok installed
Priority: optional
Section: net
Installed-Size: 375
Maintainer: Andrea Schäfer <andrea.schaefer@puri.sm>
Architecture: arm64
Version: 0.0.8~331.gbp298bed
Depends: dconf-gsettings-backend | gsettings-backend, libc6 (>= 2.17), libcairo2 (>= 1.2.4), libgdk-pixb)
Suggests: calls
Description: XMPP and SMS messaging
 Chatty is a chat application for XMPP and SMS using
 libpurple and Modemmanager.
Homepage: https://source.puri.sm/Librem5/chatty