From 22522d9c2c69624fe4d81d61ee65a56610f22f1d Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 21 Jul 2015 19:41:59 +0200
Subject: [PATCH] qsvdec: fix a memleak of async_fifo

init() is called whenever format changes, so current code would leak the
fifo in this case.
---
 libavcodec/qsvdec.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c
index 489375cf7b..ef781d9d8e 100644
--- a/libavcodec/qsvdec.c
+++ b/libavcodec/qsvdec.c
@@ -73,10 +73,12 @@ int ff_qsv_decode_init(AVCodecContext *avctx, QSVContext *q, mfxSession session)
     mfxVideoParam param = { { 0 } };
     int ret;
 
-    q->async_fifo = av_fifo_alloc((1 + q->async_depth) *
-                                  (sizeof(mfxSyncPoint) + sizeof(QSVFrame*)));
-    if (!q->async_fifo)
-        return AVERROR(ENOMEM);
+    if (!q->async_fifo) {
+        q->async_fifo = av_fifo_alloc((1 + q->async_depth) *
+                                      (sizeof(mfxSyncPoint) + sizeof(QSVFrame*)));
+        if (!q->async_fifo)
+            return AVERROR(ENOMEM);
+    }
 
     ret = qsv_init_session(avctx, q, session);
     if (ret < 0) {