100l: Fix compilation after r21037.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@21039 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/utils.c

@@ -963,7 +963,7 @@ int av_get_bits_per_sample(enum CodecID codec_id){
         return 3;
     case CODEC_ID_ADPCM_SBPRO_4:
     case CODEC_ID_ADPCM_CT:
-    case CODEC_ID_ADPCM_WAV:
+    case CODEC_ID_ADPCM_IMA_WAV:
     case CODEC_ID_ADPCM_MS:
     case CODEC_ID_ADPCM_YAMAHA:
         return 4;