caf: Give context structure a consistent name
pcm-dvd: Move a variable to a smaller scope

This avoids an unused variable warning on big-endian systems.
Merge commit '4d5b99dacdbb56373e5abe2ad35fc87b5c0c5bd2'

* commit '4d5b99dacdbb56373e5abe2ad35fc87b5c0c5bd2':
  caf: Give context structure a consistent name

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'b97f6ef956293fe06ae1e99bd295f42613081f37'

* commit 'b97f6ef956293fe06ae1e99bd295f42613081f37':
  pcm-dvd: Move a variable to a smaller scope

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/dxtory: remove unused variables

Found-by: Benoit Fouet <benoit.fouet@free.fr>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavformat/iff: print error message when DSDIFF compression type is not supported

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>