Change to use unaligned load
Change to use unaligned load

Fixes segfaults due to aligned load of unaligned data.

Change-Id: If0106f2c2e7df6713c8db14cf360eabbb334cbb5

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom