Add missing decont
Add missing decont

The decont got lost in 18af3f4411. On the JVM backend this lead to
RuntimeExceptions because the attribute $!reified was not found.

salortiz/rakudo,tony-o/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,salortiz/rakudo,rakudo/rakudo,MasterDuke17/rakudo,salortiz/rakudo,tony-o/rakudo,rakudo/rakudo,salortiz/rakudo,labster/rakudo,salortiz/rakudo,tony-o/rakudo,tbrowder/rakudo,labster/rakudo,MasterDuke17/rakudo,labster/rakudo,rakudo/rakudo,salortiz/rakudo,tony-o/rakudo,rakudo/rakudo,tbrowder/rakudo,tbrowder/rakudo,labster/rakudo,labster/rakudo,MasterDuke17/rakudo,rakudo/rakudo,tony-o/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,tony-o/rakudo,labster/rakudo