[FFmpeg-soc] [soc] Clarify comment for new AVFrame members

[Alexander Strange]

They are set by libavcodec even if they aren't used for anything useful ATM.
---
 libavcodec/avcodec.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0c73945d0cc40a6ade8ca78dfa0d9bea178f4743.diff
Type: text/x-patch
Size: 614 bytes
Desc: not available
URL: <http://lists.mplayerhq.hu/pipermail/ffmpeg-soc/attachments/20080819/547bc1db/attachment.bin>