Add initialization for a stack array
Add initialization for a stack array

BUG=aomedia:1363

Change-Id: If94c6404836fefcf3352f1a4f380066965ca68ce

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