Signed-off-by: Sasi Inguva <is...@google.com>
---
 libavformat/matroskaenc.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index f731b678b9..88f6c647b9 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -393,6 +393,23 @@ static void put_xiph_size(AVIOContext *pb, int size)
  * Free the members allocated in the mux context.
  */
 static void mkv_free(MatroskaMuxContext *mkv) {
+    uint8_t* buf;
+    if (mkv->dyn_bc) {
+        avio_close_dyn_buf(mkv->dyn_bc, &buf);
+        av_free(buf);
+    }
+    if (mkv->info_bc) {
+        avio_close_dyn_buf(mkv->info_bc, &buf);
+        av_free(buf);
+    }
+    if (mkv->tracks_bc) {
+        avio_close_dyn_buf(mkv->tracks_bc, &buf);
+        av_free(buf);
+    }
+    if (mkv->tags_bc) {
+        avio_close_dyn_buf(mkv->tags_bc, &buf);
+        av_free(buf);
+    }
     if (mkv->main_seekhead) {
         av_freep(&mkv->main_seekhead->entries);
         av_freep(&mkv->main_seekhead);
-- 
2.11.0.483.g087da7b7c-goog

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