marpa.w: marpa_t_next() set error code on nulling trees
marpa.w: marpa_t_next() set error code on nulling trees

jeffreykegler/kollos,jeffreykegler/kollos,pczarn/kollos,pczarn/kollos,jeffreykegler/kollos,jeffreykegler/libmarpa,pczarn/kollos,jeffreykegler/libmarpa,jeffreykegler/libmarpa,pczarn/kollos,jeffreykegler/kollos,pczarn/kollos,jeffreykegler/kollos,jeffreykegler/libmarpa,jeffreykegler/libmarpa