[x265] Issue #508: crash in x265_zone_free, if going to 'fail' early in x265_encoder_open (multicoreware/x265)

[CapellaSystems]

New issue 508: crash in x265_zone_free, if going to 'fail' early in x265_encoder_open
https://bitbucket.org/multicoreware/x265/issues/508/crash-in-x265_zone_free-if-going-to-fail

Martin Belleau:

In x265\_encoder\_open, if x265\_check\_params returns 0, we goto fail and execute:

PARAM\_NS::x265\_param\_free\(param\);  
PARAM\_NS::x265\_param\_free\(latestParam\);

and this point, rc.zonefileCount and rc.zoneCount are not initialized, so I am seeing an access violation when x265\_zone\_free calls x265\_free.