From 1e80fc44ecb3bae39e531b9b932432e34d5242d9 Mon Sep 17 00:00:00 2001
From: jl777 <jameslee777@yahoo.com>
Date: Tue, 2 Jul 2019 01:39:12 -1100
Subject: [PATCH] Check null LastTip()

---
 src/main.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main.cpp b/src/main.cpp
index e01cba61f..67ba03d79 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -352,7 +352,9 @@ namespace {
 
     int GetHeight()
     {
-        return chainActive.LastTip()->GetHeight();
+        if ( chainActive.LastTip() != 0 )
+            return chainActive.LastTip()->GetHeight();
+        else return(-1);
     }
 
     void UpdatePreferredDownload(CNode* node, CNodeState* state)