typefindfunctions: fix tap typefinder

If we memcmp() 12 bytes we should make sure to get
at least 12 bytes as well, and not just 8 bytes.

Thanks oss-fuzz!

diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c
index 84ba7eb..15fa3b3 100644 (file)
--- a/gst/typefind/gsttypefindfunctions.c
+++ b/gst/typefind/gsttypefindfunctions.c
@@ -5250,7 +5250,7 @@ static GstStaticCaps tap_caps = GST_STATIC_CAPS ("audio/x-tap-tap");
 static void
 tap_type_find (GstTypeFind * tf, gpointer unused)
 {
-  const guint8 *data = gst_type_find_peek (tf, 0, 8);
+  const guint8 *data = gst_type_find_peek (tf, 0, 16);
 
   if (data) {
     if (memcmp (data, "C64-TAPE-RAW", 12) == 0