list() causing problems with serialization

On line 401 of rdf.api.inc the following line:

list($subject, $predicate, $object) = $triple;

causes some issues if we have data with non-numerical keys. Could we have it replaced with:

list($subject, $predicate, $object) = array_values($triple);

Please advise, I will make a patch if needed.

Thanks,
JPL