Add test for GPtrArray with transfer full
Add test for GPtrArray with transfer full

This complements the already existing test for a "transfer container" return
array. We can't verify the internal refcount as these arrays get marshalled
internally, but at least we can verify that it does not crash due to
double-free.

davidmalcolm/pygobject,davibe/pygobject,choeger/pygobject-cmake,GNOME/pygobject,sfeltman/pygobject,thiblahute/pygobject,davibe/pygobject,pexip/pygobject,choeger/pygobject-cmake,MathieuDuponchelle/pygobject,jdahlin/pygobject,jdahlin/pygobject,MathieuDuponchelle/pygobject,sfeltman/pygobject,thiblahute/pygobject,davibe/pygobject,davibe/pygobject,jdahlin/pygobject,sfeltman/pygobject,pexip/pygobject,GNOME/pygobject,thiblahute/pygobject,choeger/pygobject-cmake,GNOME/pygobject,MathieuDuponchelle/pygobject,davidmalcolm/pygobject,pexip/pygobject,davidmalcolm/pygobject