bitstream,mem_put_varsize: quiet warning in assert
bitstream,mem_put_varsize: quiet warning in assert

string literal to int

BUG=aomedia:445

Change-Id: I262911ad4e4b52f2d203c03d9bdfcbaa1a81984b

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