SSE2: slightly (~2%) faster Predictor #1
SSE2: slightly (~2%) faster Predictor #1

by removing a load from memory

Change-Id: If6c4aa7fb99309d09f943393ec772891449971f0

webmproject/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,PKRoma/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,PKRoma/libwebp,webmproject/libwebp,webmproject/libwebp