on_call_last() should return an index, not a node.
on_call_last() should return an index, not a node.

jeffreybaird/oga,jeffreybaird/oga,jeffreybaird/oga,altmetric/oga,YorickPeterse/oga,ttasanen/oga,jeffreybaird/oga,altmetric/oga,ttasanen/oga,YorickPeterse/oga,YorickPeterse/oga,jeffreybaird/oga,dfockler/oga,dfockler/oga,YorickPeterse/oga,ttasanen/oga,ttasanen/oga,dfockler/oga,YorickPeterse/oga,altmetric/oga,dfockler/oga,altmetric/oga,altmetric/oga,dfockler/oga,ttasanen/oga