tonihei 0ab7c752d7 Check if codec still exists before handling tunneling events
The tunneling callbacks are sent via Handler messages and may be
handled after the codec/surface was changed or released.

We already guard against the codec/surface change condition by
creating a new listener and verifying that the current callback
happens for the correct listener instance, but we don't guard
against a released codec yet.

PiperOrigin-RevId: 495882353
(cherry picked from commit 5e23b8bfd5a9a9542c2ab8d23ae51c1689d8ff51)
2023-01-25 18:29:34 +00:00
..