bug#56528: 29.0.50; Emacs lucid segfaults when X dies

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  56528@debbugs.gnu.org
> Date: Thu, 14 Jul 2022 09:06:54 +0800
> 
> But once all frames are deleted by the error handler, shouldn't
> `selected-frame' revert back to the initial frame?

The initial frame exists only in a daemon.  In such a session, there
should be no error messages, because there's no way of showing them.