ref: 9ba1d60bd1b0ff097b7fc88958be7ba7b589e7ca
parent: 4bb4c2291b20cb688e95f83efff3ca81d9a165ee
author: Yunqing Wang <yunqingwang@google.com>
date: Tue Jul 1 04:58:05 EDT 2014
Fix visual studio build issue Fixed the signed/unsigned mismatch. Change-Id: Id83d603b8f1745b71f4cf695a0751e55518b1316