fix xscale and yscale behaviour which havoc broke. they have to default to

fix xscale and yscale behaviour which havoc broke. they have to default to

Mon Sep 10 16:55:49 2001  Tim Janik  <timj@gtk.org>

        * gtk/gtkalignment.c (gtk_alignment_init): fix xscale and yscale
        behaviour which havoc broke. they have to default to 1.0 for
        expand behaviour.

        * gtk/gtkwindow.c (gtk_window_get_property): don't cast NULL objects.