Merge commit 'c82da343'

* commit 'c82da343':
  pcm: always use codec->id instead of codec_id

This is not merged as we consistently use codec_id, while libav against what
the comit message might hint at mixes both in the decoder.
Its fine to use either but it should be consistent.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/pcm.c

@@ -298,7 +298,7 @@ static int pcm_decode_frame(AVCodecContext *avctx, void *data,
 
     /* av_get_bits_per_sample returns 0 for AV_CODEC_ID_PCM_DVD */
     samples_per_block = 1;
-    if (AV_CODEC_ID_PCM_DVD == avctx->codec_id) {
+    if (avctx->codec_id == AV_CODEC_ID_PCM_DVD) {
         if (avctx->bits_per_coded_sample != 20 &&
             avctx->bits_per_coded_sample != 24) {
             av_log(avctx, AV_LOG_ERROR,