Bug#844741: [ristretto] Segafault when run as root

[Akbarkhon Variskhanov]

Control: tags -1 unreproducible
Control: retitle -1 'ristretto: SEGV when run as root'

With ristretto 0.12.3, I can run it as root. The errors are similar
but it doesn't segfault. Can you reproduce it in the latest version?

Thanks.