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fix `findShufflingRef` slot compute around genesis (#4910) 

`dependent_slot` for epoch 2 is epoch 1's start slot - 1, not 0.
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Etan Kissling 2023-05-11 10:39:40 +02:00 committed by GitHub
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commit a09b05bc27
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beacon_chain/consensus_object_pools/blockchain_dag.nim
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@ -474,7 +474,7 @@ func findShufflingRef*(
## Lookup a shuffling in the cache, returning `none` if it's not present - see
## `getShufflingRef` for a version that creates a new instance if it's missing
let
dependent_slot = if epoch > 2: (epoch - 1).start_slot() - 1 else: Slot(0)
dependent_slot = if epoch >= 2: (epoch - 1).start_slot() - 1 else: Slot(0)
dependent_bsi = dag.atSlot(bid, dependent_slot).valueOr:
return Opt.none(ShufflingRef)