ogg: check that the expected number of headers had been parsed

Not having the header for a codec is a tell-tale of a broken file.

1 files changed, 4 insertions, 2 deletions

diff --git a/libavformat/oggparseflac.c b/libavformat/oggparseflac.c
index 9860a0eb97..f59b4008dc 100644
--- a/libavformat/oggparseflac.c
+++ b/libavformat/oggparseflac.c
@@ -88,11 +88,13 @@ old_flac_header (AVFormatContext * s, int idx)
 const struct ogg_codec ff_flac_codec = {
     .magic = "\177FLAC",
     .magicsize = 5,
-    .header = flac_header
+    .header = flac_header,
+    .nb_header = 2,
 };
 
 const struct ogg_codec ff_old_flac_codec = {
     .magic = "fLaC",
     .magicsize = 4,
-    .header = old_flac_header
+    .header = old_flac_header,
+    .nb_header = 0,
 };