Doing refund on OpSuicide based on the current state size and the blo…

…ck base fee

core/vm/instructions.go

@@ -19,6 +19,7 @@ package vm
 import (
 	"fmt"
 	"math"
+	"math/big"
 
 	"github.com/dominant-strategies/go-quai/common"
 	"github.com/dominant-strategies/go-quai/core/types"
@@ -831,6 +832,8 @@ func opSuicide(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]
 	}
 	balance := interpreter.evm.StateDB.GetBalance(addr)
 	interpreter.evm.StateDB.AddBalance(beneficiaryAddr, balance)
+	refund := new(big.Int).Mul(interpreter.evm.Context.BaseFee, new(big.Int).SetUint64(params.CallNewAccountGas(interpreter.evm.Context.QuaiStateSize)))
+	interpreter.evm.StateDB.AddBalance(beneficiaryAddr, refund)
 	interpreter.evm.StateDB.Suicide(addr)
 	return nil, nil
 }