[FFmpeg-cvslog] Merge commit '9b09792c90b580842157ca8ce534be434725a841'

[Mark Thompson]

ffmpeg | branch: master | Mark Thompson <sw at jkqxz.net> | Mon Feb 12 23:05:13 2018 +0000| [ccef7a85d6491fb354a36970162fa0204217d8e7] | committer: Mark Thompson

Merge commit '9b09792c90b580842157ca8ce534be434725a841'

* commit '9b09792c90b580842157ca8ce534be434725a841':
  lavc/qsv: default la_ds to MFX_LOOKAHEAD_DS_UNKNOWN

This commit is a noop: the code in FFmpeg is slightly different and never
contained the invalid value.

Merged-by: Mark Thompson <sw at jkqxz.net>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ccef7a85d6491fb354a36970162fa0204217d8e7
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