bug#18112: 24.4.50; emacs --daemon infinite loop in find_interval

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: mvoteiza@udel.edu,  18112@debbugs.gnu.org
> Date: Sat, 26 Jul 2014 11:44:13 +0200
> 
> We never trigger redisplay after do_pending_window_change in
> wait_reading_process_output.  Why?

Probably because redisplay calls do_pending_window_change at its very
beginning.

I also don't see how would triggering redisplay earlier fix the
problem at hand.  Am I missing something?