bug#22789: 25.1.50; In last master build https connections stop working

[Eli Zaretskii]

> From: Alain Schneble <a.s@realize.ch>
> CC: <larsi@gnus.org>, <j_l_domenech@yahoo.com>, <22789@debbugs.gnu.org>
> Date: Tue, 1 Mar 2016 00:13:04 +0100
> 
> > There is also some disturbing signs in retrying GnuTLS handshake from
> > wait_reading_process_output -- I'm not sure the way that function
> > works, at least on Windows, is according to you expectations.  The
> > while loop there doesn't really spin all the time, did you know that?
> > Can you describe what you think should happen there for a connection
> > whose GnuTLS handshake is not yet complete?
> 
> Hmm.  What I observed is that it stops if the Emacs window looses its
> focus (and no other window messages are dispatched to the window).  If
> it has focus, it gets called at least once per second.

Disable cursor blinking and try again.