If decoding with hwaccel, but decoding fails, these pointers
are null at this point.
---
 libavcodec/av1dec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c
index 6a9de07d16..bc4ef63e68 100644
--- a/libavcodec/av1dec.c
+++ b/libavcodec/av1dec.c
@@ -281,6 +281,8 @@ static void skip_mode_params(AV1DecContext *s)
     forward_idx  = -1;
     backward_idx = -1;
     for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
+        if (!s->ref[header->ref_frame_idx[i]].raw_frame_header)
+            return;
         ref_hint = 
s->ref[header->ref_frame_idx[i]].raw_frame_header->order_hint;
         dist = get_relative_dist(seq, ref_hint, header->order_hint);
         if (dist < 0) {
-- 
2.39.5 (Apple Git-154)

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