[PATCH v2 0/3] MR10754: mf/session: Initialise the stored presentation rate.

[Conor McCarthy (＠cmccarthy)]

The latest argument passed to SetRate() is stored in presentation.rate,
but if the client never called SetRate(), the stored rate remains zero,
which results in preroll not being enabled. That could be fixed by
instead calling GetRate() before enabling preroll, but always setting
the stored rate reduces the risk of regression.

--
  v2: mf/session: Initialise the stored presentation rate.
      mf/tests: Test preroll notification when the rate has not been set.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10754