From 704952fee52f4033018919fee7815ee3bc833280 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Thu, 14 Feb 2013 11:44:33 +0100
Subject: [PATCH] h264: set ref_count to 0 for intra slices.

CC:libav-stable@libav.org
(cherry picked from commit 437211ae73ef1ed8285b4fed7620502ea4999e11)

Fixes deadlocks waiting for non-existing references with some fuzzed files.

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
---
 libavcodec/h264.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 6f49dd28f2..54f618653d 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -3039,8 +3039,11 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
             h->list_count = 2;
         else
             h->list_count = 1;
-    } else
+    } else {
         h->list_count = 0;
+        h->ref_count[0] = h->ref_count[1] = 0;
+    }
+
 
     max_refs = s->picture_structure == PICT_FRAME ? 16 : 32;