ref: d3fe3b2abb90caf87f76e46d83a2acfcfcc5b687
parent: b2ccb9c189069d45d201c988184e9e0796b96270
author: Alex Converse <aconverse@google.com>
date: Thu Nov 19 11:46:46 EST 2015
Avoid an unsigned overflow in invert_quant Change-Id: I16a570b2af66b6580d1cd6f8345a25f079009bf4