:fix: checkReplica incorrectly returns ErrBadPR

extern/storage-sealing/checks.go

@@ -213,7 +213,7 @@ func checkReplicaUpdate(ctx context.Context, maddr address.Address, si SectorInf
 		return &ErrBadRU{xerrors.Errorf("nil sealed cid")}
 	}
 	if si.ReplicaUpdateProof == nil {
-		return ErrBadPR{xerrors.Errorf("nil PR2 proof")}
+		return &ErrBadPR{xerrors.Errorf("nil PR2 proof")}
 	}
 
 	return nil

extern/storage-sealing/states_failed.go

@@ -233,7 +233,7 @@ func (m *Sealing) handleSubmitReplicaUpdateFailed(ctx statemachine.Context, sect
 			return ctx.Send(SectorDealsExpired{xerrors.Errorf("expired dealIDs in sector: %w", err)})
 		default:
 			log.Errorf("sanity check error, not proceeding: +%v", err)
-			return xerrors.Errorf("checkPieces sanity check error: %w", err)
+			return xerrors.Errorf("checkReplica sanity check error: %w", err)
 		}
 	}