From 8e15d99955b59d496da0b45d1f0be645b71575e9 Mon Sep 17 00:00:00 2001
From: Pavel Vasin <pavel@vasin.nl>
Date: Thu, 23 Mar 2017 02:03:13 +0300
Subject: [PATCH] wallet: don't leak height of local chain during inital sync

---
 src/wallet.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/wallet.cpp b/src/wallet.cpp
index 8b5bbf00559f5..184c2c5b99a24 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1417,7 +1417,8 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend,
     // going ten blocks back. Doesn't yet do anything for sniping, but does act
     // to shake out wallet bugs like not showing nLockTime'd transactions at
     // all.
-    wtxNew.nLockTime = std::max(0, nBestHeight - 10);
+    if (!IsInitialBlockDownload())
+        wtxNew.nLockTime = std::max(0, nBestHeight - 10);
 
     // Secondly occasionally randomly pick a nLockTime even further back, so
     // that transactions that are delayed after signing for whatever reason,