run-test.sh.in: now that we run under 'set -e', catch failures
run-test.sh.in: now that we run under 'set -e', catch failures

If we just let with-session-bus.sh exit nonzero, the script aborts.
We want to catch the nonzero exit status and do some more things
before failing.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=69585
Reviewed-by: Guillaume Desmottes <f16649c7afcd84e3350287183c4ed23cb1aea57c@collabora.co.uk>

freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control