File ffmpeg-CVE-2020-22046.patch of Package ffmpeg.30521

From 097c917c147661f5378dae8fe3f7e46f43236426 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Date: Thu, 17 Oct 2019 11:11:55 +0200
Subject: [PATCH] avcodec/ac3enc: Fix memleak

Fixes ticket #8294.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
---
 libavcodec/ac3enc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index 76872a8fe0..25318f8631 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -2051,7 +2051,8 @@ av_cold int ff_ac3_encode_close(AVCodecContext *avctx)
         av_freep(&block->cpl_coord_mant);
     }
 
-    s->mdct_end(s);
+    if (s->mdct_end)
+        s->mdct_end(s);
 
     return 0;
 }
@@ -2433,7 +2434,7 @@ av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
 
     ret = validate_options(s);
     if (ret)
-        return ret;
+        goto init_fail;
 
     avctx->frame_size = AC3_BLOCK_SIZE * s->num_blocks;
     avctx->initial_padding = AC3_BLOCK_SIZE;
-- 
2.32.0