FeatureDefn may disappear underneath the bindings

[Ari Jolma]

use Geo::GDAL;
$d = Geo::OGR::FeatureDefn->new();
$f = Geo::OGR::Feature->new($d);

causes a segfault. The reason is that FD is destroyed twice. F increases the ref count of FD when it is created and decreases when it is destroyed. In this case the decreasing leads to FD being destroyed. The bindings do not know about this.

The possible solution is to have the bindings reference the FD also. I'm going to try this but let's have a ticket anyway.

[Ari Jolma]

Fixed in r12843.