From 265731f201f1dde0dfe2448ad21d8256c17a33e2 Mon Sep 17 00:00:00 2001
From: Lynne <dev@lynne.ee>
Date: Sat, 29 Jan 2022 00:52:53 +0100
Subject: [PATCH] lavu/tx: reset subcontext pointer if initialization fails

Thanks to mkver for pointing this out.
---
 libavutil/tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/tx.c b/libavutil/tx.c
index a299408ed4..a90ccffcc4 100644
--- a/libavutil/tx.c
+++ b/libavutil/tx.c
@@ -606,7 +606,7 @@ av_cold int ff_tx_init_subtx(AVTXContext *s, enum AVTXType type,
             break;
     }
 
-    av_free(sub);
+    av_freep(&s->sub);
 
 end:
     av_free(cd_matches);