avformat/mov: Do not zero memory that is written too or unused

Fixes: OOM
Fixes: 31220/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6033383962574848
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

diff --git a/libavformat/mov.c b/libavformat/mov.c
index f4c2215ba4e7e41346263b3ca15e32490b44d068..a1411264ecf80b3c28fe7937e4ceb93fe0a9dbde 100644 (file)
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -3022,7 +3022,7 @@ static int mov_read_sdtp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     av_freep(&sc->sdtp_data);
     sc->sdtp_count = 0;
 
-    sc->sdtp_data = av_mallocz(entries);
+    sc->sdtp_data = av_malloc(entries);
     if (!sc->sdtp_data)
         return AVERROR(ENOMEM);