avformat: use ff_alloc_extradata()

Signed-off-by: Paul B Mahol <onemda@gmail.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index dac98acaf3..72faf4cce2 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1599,10 +1599,8 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
             }
         }
         if (descriptor->extradata) {
-            st->codec->extradata = av_mallocz(descriptor->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
-            if (st->codec->extradata) {
+            if (!ff_alloc_extradata(st->codec, descriptor->extradata_size)) {
                 memcpy(st->codec->extradata, descriptor->extradata, descriptor->extradata_size);
-                st->codec->extradata_size = descriptor->extradata_size;
             }
         } else if(st->codec->codec_id == AV_CODEC_ID_H264) {
             ff_generate_avci_extradata(st);