Update introspection annotations
While fixing #409 (closed), I put in @ink_rect: (out)(allow-none)
in the annotations for rsvg_handle_get_geometry_sub()
. Per the GI annotations reference, however, allow-none
has been deprecated in favor of optional
for out
parameters.
We should check all the GI annotations to ensure they are up to date; they are not that many, anyway.
Edited by Federico Mena Quintero