ref: a57301cfa409dcdffab8eb1fe12585be740dc221
parent: 98efa1c43f5fec025dc48b8bd63b6d15f2cd6498
author: Jingning Han <jingning@google.com>
date: Fri Aug 17 05:08:15 EDT 2018
Clean up var define in apply_temporal_filter() Change-Id: Iffb90d1ce61a70de52196247e18a31485038e6dd