From d959efcc4974eab11e411b8e614faac44a613dcc Mon Sep 17 00:00:00 2001
From: Yongjie Ma <20391402+yongjiema@users.noreply.github.com>
Date: Fri, 16 Aug 2019 19:25:06 +0800
Subject: [PATCH] Fix the potential risk to get null CurrentHeaderHash from
 Blockchain (#1033)

---
 neo/Ledger/Blockchain.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/neo/Ledger/Blockchain.cs b/neo/Ledger/Blockchain.cs
index 889d4b18bb..7d0b72402d 100644
--- a/neo/Ledger/Blockchain.cs
+++ b/neo/Ledger/Blockchain.cs
@@ -66,9 +66,9 @@ public class FillCompleted { }
         public Store Store { get; }
         public MemoryPool MemPool { get; }
         public uint Height => currentSnapshot.Height;
-        public uint HeaderHeight => (uint)header_index.Count - 1;
+        public uint HeaderHeight => currentSnapshot.HeaderHeight;
         public UInt256 CurrentBlockHash => currentSnapshot.CurrentBlockHash;
-        public UInt256 CurrentHeaderHash => header_index[header_index.Count - 1];
+        public UInt256 CurrentHeaderHash => currentSnapshot.CurrentHeaderHash;
 
         private static Blockchain singleton;
         public static Blockchain Singleton