[AC21.5 R21.4] Avoid a crash in Cygwin when clicking File -> Print under Win32

[Stephen J. Turnbull]

Aidan Kehoe writes:

 > 2006-11-29  Aidan Kehoe  <kehoea at parhasard.net>
 > 
 > 	* sound.c (init_native_sound):
 > 	Only X11 and GTK devices can possibly not be on the console of the
 > 	associated machine.

VNC transmits the display, not the program's output, so to XEmacs it
feels like the console, is that the story?  So VNC doesn't affect this
proposition, I guess.