[PATCH v10 0/5] MR3572: mf: Make session_get_node_object() more robust.

[Zhiyi Zhang (＠zhiyi)]

It's possible that a state object pointer not in the topology node collection gets passed to
session_get_node_object(). Instead of returning the last node when the object is not found, we
should return a NULL so that the state of the last node is not changed by mistake.

--
  v10: mf/tests: Test IMFMediaSession::Start().
       mf: Support seeking while a session is started.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/3572