libavformat/lafdec: free data

Fixes: memleak

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/lafdec.c

@@ -252,6 +252,15 @@ again:
     return 0;
 }
 
+static int laf_read_close(AVFormatContext *ctx)
+{
+    LAFContext *s = ctx->priv_data;
+
+    av_freep(&s->data);
+
+    return 0;
+}
+
 static int laf_read_seek(AVFormatContext *ctx, int stream_index,
                          int64_t timestamp, int flags)
 {
@@ -269,7 +278,9 @@ const AVInputFormat ff_laf_demuxer = {
     .read_probe     = laf_probe,
     .read_header    = laf_read_header,
     .read_packet    = laf_read_packet,
+    .read_close     = laf_read_close,
     .read_seek      = laf_read_seek,
     .extensions     = "laf",
     .flags          = AVFMT_GENERIC_INDEX,
+    .flags_internal = FF_FMT_INIT_CLEANUP,
 };