avcodec/cbs_av1: avoid reading trailing bits when obu type is OBU_TILE_LIST

Signed-off-by: Fei Wang <fei.w.wang@intel.com>
Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 1ea44178f5)

libavcodec/cbs_av1.c

@@ -1040,6 +1040,7 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx,
 
     if (obu->obu_size > 0 &&
         obu->header.obu_type != AV1_OBU_TILE_GROUP &&
+        obu->header.obu_type != AV1_OBU_TILE_LIST &&
         obu->header.obu_type != AV1_OBU_FRAME) {
         int nb_bits = obu->obu_size * 8 + start_pos - end_pos;