Commit 7f7c1d48b0 for ffmpeg

commit 7f7c1d48b0a1ebcdb8769eacc6bebbafac11ef87
Author: Kacper Michajłow <kasper93@gmail.com>
Date:   Tue Sep 29 11:34:20 2026 +0200

    avformat/dashdec: free the context if copying the whitelists fails

    Signed-off-by: Kacper Michajłow <kasper93@gmail.com>

diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
index 2ce6fe6c56..76352c1708 100644
--- a/libavformat/dashdec.c
+++ b/libavformat/dashdec.c
@@ -1969,8 +1969,11 @@ static int reopen_demux_for_component(AVFormatContext *s, struct representation
                       pls, read_data, NULL, c->is_live ? NULL : seek_data);
     pls->pb.pub.seekable = 0;

-    if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
+    if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0) {
+        avformat_free_context(pls->ctx);
+        pls->ctx = NULL;
         goto fail;
+    }

     pls->ctx->flags = AVFMT_FLAG_CUSTOM_IO;
     pls->ctx->probesize = s->probesize > 0 ? s->probesize : 1024 * 4;