avformat/mxfdec: Clear metadata_sets_count in mxf_read_close()

This avoids problems if the function is called twice

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 13816a1d085fdb6598ea6dc92ed3a1e6aff0cc1f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 118e3e40b4..368524e5cf 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -3239,6 +3239,7 @@ static int mxf_read_close(AVFormatContext *s)
     for (i = 0; i < mxf->metadata_sets_count; i++) {
         mxf_free_metadataset(mxf->metadata_sets + i, 1);
     }
+    mxf->metadata_sets_count = 0;
     av_freep(&mxf->partitions);
     av_freep(&mxf->metadata_sets);
     av_freep(&mxf->aesc);