From: Michael Niedermayer <[email protected]>

This avoids a potential infinite loop due to not consuming any packet data.

Signed-off-by: Michael Niedermayer <[email protected]>
Signed-off-by: Justin Ruggles <[email protected]>

CC:[email protected]
---
 libavcodec/wmadec.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c
index e2803bb..8d82ec4 100644
--- a/libavcodec/wmadec.c
+++ b/libavcodec/wmadec.c
@@ -808,7 +808,8 @@ static int wma_decode_superframe(AVCodecContext *avctx, 
void *data,
                buf_size, avctx->block_align);
         return AVERROR_INVALIDDATA;
     }
-    buf_size = avctx->block_align;
+    if (avctx->block_align)
+        buf_size = avctx->block_align;
 
     init_get_bits(&s->gb, buf, buf_size*8);
 
@@ -908,7 +909,7 @@ static int wma_decode_superframe(AVCodecContext *avctx, 
void *data,
     *got_frame_ptr   = 1;
     *(AVFrame *)data = s->frame;
 
-    return avctx->block_align;
+    return buf_size;
  fail:
     /* when error, we reset the bit reservoir */
     s->last_superframe_len = 0;
-- 
1.7.1

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