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

This field was only ever set and freed from avcodec, and not otherwise
used. However, because frames are refcounted now, avcodec cannot make any
assumptions about the lifetime of the frame metadata, which can result in
double-frees or leaked memory.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Coccinelle profile used:

  @@
  expression r, ctx, f, loglevel, str, flags;
  @@

  -if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_get_buffer(ctx, f, flags)) < 0)
  +    return r;

  @@
  expression r, ctx, f, loglevel, str;
  @@

  -if ((r = ff_reget_buffer(ctx, f)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_reget_buffer(ctx, f)) < 0)
  +    return r;

  @@
  expression r, ctx, f, loglevel, str, flags;
  @@

  -if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
  +    return r;

...along with some manual patches for the remaining ones.

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

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

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

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

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

* qatar/master:
  hqdn3d: Fix out of array read in LOWPASS
  cabac: remove unused argument of ff_init_cabac_states()
  rawdec: fix a typo -- || instead of |

Conflicts:
	libavcodec/cabac.c
	libavcodec/h264.c
	libavfilter/vf_hqdn3d.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '37cb3b18':
  matroskadec: request a read buffer for the wav header

See: d0b45045Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'a8b60158':
  dsputil: convert remaining functions to use ptrdiff_t strides

Conflicts:
	libavcodec/dsputil.h
	libavcodec/dsputil_template.c
	libavcodec/h264qpel_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a4472ac0':
  Add informative messages to av_log_ask_for_sample calls lacking them
  anm: Get rid of some very silly goto statements

Conflicts:
	libavformat/anm.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '202c2acc':
  vda: remove async decoder leftovers

Conflicts:
	libavcodec/vda_h264.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a2816230':
  avframe: call release_buffer only if it is set

Conflicts:
	libavcodec/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'fce68c93':
  pthread: unref the decoded but not returned frames on close.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '555000c7':
  h264: check that DPB is allocated before accessing it in flush_dpb()
  vf_hqdn3d: fix uninitialized variable use
  vf_gradfun: fix uninitialized variable use
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c2597c5a':
  h264_refs: cosmetics, reformat

Conflicts:
	libavcodec/h264_refs.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f08fefc4':
  h264: remove a useless svq3 condition
  mpegvideo: remove FMT_H264
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  avframe: Copy buffer type in copy_props.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ee870491':
  mpegvideo: reindent

Conflicts:
	libavcodec/mpegvideo.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes VDPAU decoding with MPlayer.