[PATCH 2/3] Fix zlib/lzma decompression.

[Simon Horman]

On Sun, Feb 01, 2015 at 12:10:07AM +0800, Yousong Zhou wrote:
> Let {zlib,lzma}_decompress_file() return NULL if anything wrong happened
> to allow the other method to have a chance to run.
> 
> Signed-off-by: Yousong Zhou <yszhou4tech at gmail.com>

Thanks, applied.