From 6f8e03a61495b81924601e427bb3a189910a26ce Mon Sep 17 00:00:00 2001
From: Shargon <shargon@gmail.com>
Date: Fri, 30 Oct 2020 09:50:42 +0100
Subject: [PATCH] Optimize Gas Mint (#2038)

---
 src/neo/SmartContract/Native/Tokens/GasToken.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/neo/SmartContract/Native/Tokens/GasToken.cs b/src/neo/SmartContract/Native/Tokens/GasToken.cs
index 37a5098f04..c3a6ed08f4 100644
--- a/src/neo/SmartContract/Native/Tokens/GasToken.cs
+++ b/src/neo/SmartContract/Native/Tokens/GasToken.cs
@@ -1,7 +1,6 @@
 using Neo.Cryptography.ECC;
 using Neo.Ledger;
 using Neo.Network.P2P.Payloads;
-using System.Linq;
 
 namespace Neo.SmartContract.Native.Tokens
 {
@@ -25,11 +24,15 @@ internal override void Initialize(ApplicationEngine engine)
         protected override void OnPersist(ApplicationEngine engine)
         {
             base.OnPersist(engine);
+            long totalNetworkFee = 0;
             foreach (Transaction tx in engine.Snapshot.PersistingBlock.Transactions)
+            {
                 Burn(engine, tx.Sender, tx.SystemFee + tx.NetworkFee);
+                totalNetworkFee += tx.NetworkFee;
+            }
             ECPoint[] validators = NEO.GetNextBlockValidators(engine.Snapshot);
             UInt160 primary = Contract.CreateSignatureRedeemScript(validators[engine.Snapshot.PersistingBlock.ConsensusData.PrimaryIndex]).ToScriptHash();
-            Mint(engine, primary, engine.Snapshot.PersistingBlock.Transactions.Sum(p => p.NetworkFee));
+            Mint(engine, primary, totalNetworkFee);
         }
     }
 }