From d7637c5a3f1d62922594cdfb6272e30dacf60ce9 Mon Sep 17 00:00:00 2001
From: Andrew Chow <achow101-github@achow101.com>
Date: Tue, 20 Feb 2018 16:08:36 -0500
Subject: [PATCH] After encrypting the wallet, reload the database environment

Calls ReloadDbEnv after encrypting the wallet so that the database
environment is flushed, closed, and reopened to prevent unencrypted
keys from being saved on disk.
---
 src/wallet/wallet.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 597d108ae..61d068622 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -719,6 +719,11 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
         // bits of the unencrypted private key in slack space in the database file.
         database->Rewrite();
 
+        // BDB seems to have a bad habit of writing old data into
+        // slack space in .dat files; that is bad if the old data is
+        // unencrypted private keys. So:
+        database->ReloadDbEnv();
+
     }
     NotifyStatusChanged(this);