Mon Jan 26 02:15:29 1998  Tim Janik  <timj@gimp.org>

        * gdk/gdkdraw.c:
        * gdk/gdkgc.c:
        * gdk/gdkimage.c:
        * gdk/gdkinput.c:
        * gdk/gdkpixmap.c:
        * gdk/gdkproperty.c:
        * gdk/gdkselection.c:
        * gdk/gdkwindow.c: added a bunch of checks for window != NULL and
          private->destroyed.
(don't trust this cvs commit message, i didn't modify that many files!)