For some reason the wireshark GUI tests hang on the Travis OS X builds,
but I could not reproduce it locally. It turns out than an error dialog
was present, but I could not know that without the screenshot.
Change-Id: Idf897d33b4fddf3c19c69ebcea60b629f1ca9368
Reviewed-on: https://code.wireshark.org/review/31682
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Peter Wu <peter@lekensteyn.nl>