ref: f3a9ae5baaa34955d5c46c3445daa04def802eca
parent: e30781ff80d931bc113a2dcb6970b1760c1feb1e
author: Jerome Jiang <jianj@google.com>
date: Fri Jun 2 09:50:08 EDT 2017
Fix ubsan failure in vp9_mcomp.c. Change-Id: Iff1dea1fe9d4ea1d3fc95ea736ddf12f30e6f48d