Fix error for .native-descriptor on closed handle
Fix error for .native-descriptor on closed handle

Addresses issue #1699.

softmoth/rakudo,nbrown/rakudo,rakudo/rakudo,salortiz/rakudo,salortiz/rakudo,tbrowder/rakudo,nbrown/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,tony-o/rakudo,tbrowder/rakudo,Gnouc/rakudo,softmoth/rakudo,lucasbuchala/rakudo,labster/rakudo,labster/rakudo,salortiz/rakudo,lucasbuchala/rakudo,tony-o/rakudo,tbrowder/rakudo,tony-o/rakudo,MasterDuke17/rakudo,tony-o/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,salortiz/rakudo,tony-o/rakudo,lucasbuchala/rakudo,rakudo/rakudo,nbrown/rakudo,nbrown/rakudo,nbrown/rakudo,labster/rakudo,Gnouc/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,rakudo/rakudo,Gnouc/rakudo,labster/rakudo,labster/rakudo,Gnouc/rakudo,softmoth/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,labster/rakudo,MasterDuke17/rakudo,rakudo/rakudo,salortiz/rakudo,rakudo/rakudo,nbrown/rakudo,salortiz/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,tony-o/rakudo,rakudo/rakudo,softmoth/rakudo,softmoth/rakudo