Bug 21.5.27: Crash when closing confirmation dialog

[Stephen J. Turnbull]

Ville Skyttä writes:

 > When closing a confirmation dialog directly using the (usually) "upper right 
 > corner X" instead of using one of the provided cancel etc buttons, XEmacs 
 > 21.5.27 crashes.  This is on Fedora Core 6.

Please tell us what window manager is involved in cases like this.  In
this case it doesn't matter, as I've reproduced the crash using the
Aqua window manager for Mac OS X, which is probably as different from
anything available for Fedora as it could be.  So this is probably
XEmacs's fault, but it does necessarily involve interaction with the
window manager.

BTW, the blank button is more or less by design IIRC.