James Zern fd4d090fd1 ConvertWRGBToYUV: use relative pointer offsets
avoids int rollover when working with large input

BUG=webp:312

Change-Id: I693cbb295df9cf94aa89294b19c0496bdbe84d18
(cherry picked from commit de9fa5074ebc51ca59c435da3a05cd108d06a7bf)
2016-11-09 12:57:03 -08:00
..
2015-12-17 19:45:14 -08:00
2016-06-21 16:04:53 +02:00
2016-06-13 18:52:37 -07:00
2016-06-13 19:10:21 -07:00