avformat/matroskadec: Assert that num_levels is non negative

Maybe Closes: CID1452496 Uninitialized scalar variable Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit 019fce18bb) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
7 months ago · d081214a70
parent bde8a67e92
commit d081214a70
1 changed files with 1 additions and 1 deletions
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@ -4197,7 +4197,7 @@ static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
    MatroskaBlock     *block = &cluster->block;
    int res;

-    av_assert0(matroska->num_levels <= 2);
+    av_assert0(matroska->num_levels <= 2U);

    if (matroska->num_levels == 1) {
        res = ebml_parse(matroska, matroska_segment, NULL);