[FFmpeg-cvslog] doc/examples/qsv_decode: remove unused config.h header file

ffmpeg | branch: master | hung kuishing | Tue Mar 12 11:15:33 2024 +0100| [78803a4b8af3470ffa9f4da672a4b40edd64f5de] | committer: Stefano Sabatini doc/examples/qsv_decode: remove unused config.h header file Signed-off-by: clarkh > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commi

[FFmpeg-cvslog] doc/examples/qsv_transcode: EINVAL is more appropriate and ENAVAIL will fail build with visual studio

ffmpeg | branch: master | hung kuishing | Thu Dec 7 06:44:06 2023 +| [6d129d8df5a3d8172a9565709a0b4ad4c86a8b52] | committer: Haihao Xiang doc/examples/qsv_transcode: EINVAL is more appropriate and ENAVAIL will fail build with visual studio Signed-off-by: clarkh > h