ref: c19fb21dcb7d50a2de41eaa03d041d014e1c43cf
parent: 5a4fea2c136464ddbc38f00f98619bea9ca68d19
author: Ronald S. Bultje <rsbultje@gmail.com>
date: Sun Nov 18 04:11:25 EST 2018
Remove entries from c->refs[] that can be retrieved from frame_hdr