crash in x265_zone_free, if going to 'fail' early in x265_encoder_open

[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.

[Aruna Matheswaran]

Fix issue #508 - Crash in case of encoder fail condition.

This patch also includes: Free memory for zone param.

→ <<cset dc2dcb53498a>>

[Aruna Matheswaran]

Fix issue #508 - Crash in case of encoder fail condition.

This patch also includes: Free memory for zone param.

→ <<cset c4b098f973e6>>