weird emacspeak bug: speech server not properly restarted after death

[Chris Brannon <chris@xxxxxxxxxxx-brannons.com>]

I only started noticing this after upgrading to emacs 25.
If the speech server crashes or is killed, emacspeak tries to restart
it.  The server does come back, but emacspeak says "process speaker not
running".  It then tries to spawn another server.  It keeps saying
"process speaker not running" and spawning servers with every key press.

To reproduce:
Start emacs.  Kill the server from another console.  Try to navigate in
emacs with the arrow keys, for instance.

-- Chris