From 8dcd00eabddab5e3366173391b87fa99e9132c36 Mon Sep 17 00:00:00 2001
From: Joakim Plate <elupus@ecce.se>
Date: Fri, 3 Feb 2012 19:13:41 +0000
Subject: [PATCH] nsvdec: Check return value of avio_seek and avoid modifying
 state if it fails

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
---
 libavformat/nsvdec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavformat/nsvdec.c b/libavformat/nsvdec.c
index 2ad8cb3a8b..c5655d20aa 100644
--- a/libavformat/nsvdec.c
+++ b/libavformat/nsvdec.c
@@ -720,7 +720,9 @@ static int nsv_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
     if(index < 0)
         return -1;
 
-    avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET);
+    if (avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET) < 0)
+        return -1;
+
     nst->frame_offset = st->index_entries[index].timestamp;
     nsv->state = NSV_UNSYNC;
     return 0;