Remove check for input buffer size as it does not guarantee that

decoder will not run out of output buffer bounds (and all suspected
decoders have their own checks now).

Originally committed as revision 10567 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/utils.c

@@ -962,8 +962,7 @@ int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *sa
             return -1;
         }
         if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
-        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t) ||
-        *frame_size_ptr < buf_size){
+        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
             av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
             return -1;
         }