Fixed the demo so the spinner thread will end.
authorMatt Birkholz <matt@birkholz.chandler.az.us>
Thu, 6 Oct 2011 22:25:58 +0000 (15:25 -0700)
committerMatt Birkholz <matt@birkholz.chandler.az.us>
Thu, 6 Oct 2011 22:25:58 +0000 (15:25 -0700)
commitdc786f36ac412dbaddeb94b2e34317cc4730e551
tree4c479d8f435f0af716056f8d7e328991ab8ec5a5
parent7deab33a3980c32a5ceea78948bfb30637128688
Fixed the demo so the spinner thread will end.

Destroyed widgets now remove themselves from a drawing's list of
widgets, but NULL was assumed to mean "haven't had any viewers yet",
not "all viewers gone".
src/gtk/fix-demo.scm