rsvg_node_draw_children(): Handle dominate==0 specially here, since it's the only value used now
rsvg_node_draw_children(): Handle dominate==0 specially here, since it's the only value used now

All the C callers to rsvg_node_draw_children() pass dominate=0.
Handle that specially in this function, so that we can remove the
"dominate" argument downstream later.

GNOME/librsvg,GNOME/librsvg,GNOME/librsvg,GNOME/librsvg