get_buffer(): do not initialize the data.

There may be more decoders that rely on this. Those should be found and
fixed.
lavfi: port MP noise filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avcodec: add avpriv_color_frame()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
h264: color frames gray

This prevents a regression from the removial of the buffer
initialization

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'd2a25c4032ce6ceabb0f51b5c1e6ca865395a793'

* commit 'd2a25c4032ce6ceabb0f51b5c1e6ca865395a793':
  get_buffer(): do not initialize the data.

Conflicts:
	libavcodec/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
yadif: remove unused variable

Found by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
cinepack: print an error if cinepak_decode() failed

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>