[FFmpeg-cvslog] avcodec/tta: Check init_get_bits8() for failure

[Michael Niedermayer]

ffmpeg | branch: release/2.5 | Michael Niedermayer <michael at niedermayer.cc> | Fri Sep  4 01:18:13 2015 +0200| [7528e36774e2a47507a1fa12cb50b4075901816f] | committer: Michael Niedermayer

avcodec/tta: Check init_get_bits8() for failure

Fixes: CID1322319

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit f1593e4ca564cdb7f3194a9eee1dea16df41142d)

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7528e36774e2a47507a1fa12cb50b4075901816f
---

 libavcodec/tta.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index 01584d9..81f5ddd 100644
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -123,6 +123,7 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
     TTAContext *s = avctx->priv_data;
     GetBitContext gb;
     int total_frames;
+    int ret;
 
     s->avctx = avctx;
 
@@ -131,7 +132,10 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
         return AVERROR_INVALIDDATA;
 
     s->crc_table = av_crc_get_table(AV_CRC_32_IEEE_LE);
-    init_get_bits8(&gb, avctx->extradata, avctx->extradata_size);
+    ret = init_get_bits8(&gb, avctx->extradata, avctx->extradata_size);
+    if (ret < 0)
+        return ret;
+
     if (show_bits_long(&gb, 32) == AV_RL32("TTA1")) {
         /* signature */
         skip_bits_long(&gb, 32);