[x265] refine deblocking filter

[Steve Borho]

On 09/24, Steve Borho wrote:
> On 09/24, Satoshi Nakagawa wrote:
> > # HG changeset patch
> > # User Satoshi Nakagawa <nakagawa424 at oki.com>
> > # Date 1411549726 -32400
> > #      Wed Sep 24 18:08:46 2014 +0900
> > # Node ID 9f96fc8374d834d424190b0b1581054996985b67
> > # Parent  b2b7072ddbf73085d457bd6a71bca946e505dea8
> > refine deblocking filter
> 
> Hi Satoshi,
> 
> I pushed this one since it looked harmless, but the automated tests are
> reporting decoder hash mismatches which bisect to this commit.  Can you
> take a look?
> 
> repro:
> vc11-x86_64-8bpp-Release
> x265 BasketballDrive_1920x1080_50.y4m o.bin --preset superfast -f 30 --hash 1

On the machines which readily reproduce the problem, a Debug build will
function perfectly. This points to a probable heap or stack access
bounds issue.

-- 
Steve Borho