libwebm: Cherrypick 5a41830 from upstream

mkvparser: Avoid double free when Chromaticity parse fails.

PrimaryChromaticity::Parse never owns the PrimaryChromaticity
it allocates-- avoid freeing it because doing so results in a
double free when the MasteringMetadata dtor runs.

Test: CTS tests using webm files still pass.
Bug: 116615297

Change-Id: I3acd76204a37e057cea4a5d2c352c68ecb49c990
(cherry picked from commit d90a7f1d7451773122b88033013e6551ea8bb997)
(cherry picked from commit 0f998713686da56f36a5b603a4897fe5952c0370)
1 file changed