HAMMER_MAX_OBJID
rebal.key_end.obj_id = HAMMER_MAX_OBJID;
reblock.key_end.obj_id = HAMMER_MAX_OBJID;
elm->base.obj_id == HAMMER_MAX_OBJID &&
template.key_end.obj_id = HAMMER_MAX_OBJID;
base->obj_id = HAMMER_MAX_OBJID;
cursor.key_end.obj_id = HAMMER_MAX_OBJID;
hmp->root_btree_end.obj_id = HAMMER_MAX_OBJID;
reblock.key_end.obj_id = HAMMER_MAX_OBJID;