[PATCH] Force to update thread list in queue-signal.exp

[Yao Qi]

Pedro Alves <palves@redhat.com> writes:

> Sounds like we're both hitting the same Thunderbird bug still.
> I'm running version 31.1.1 on Fedora 20.

I am running on Fedora 20 too, but with an older ThunderBird.  This
problem bites me from time to time.  Emacs/gnus doesn't have such
problem, and I am using both of them.

>
>> Looks other tests don't have to pull thread list explicitly, IIUC, so we
>> can remove them.  How about the patch below?
>
> Thanks!  I intended to do something like that myself after a period.

Patch is pushed in.

-- 
Yao (齐尧)