From cc96f2947a7aa6388e27540a959052d0b4959677 Mon Sep 17 00:00:00 2001
From: Olaoluwa Osuntokun <laolu32@gmail.com>
Date: Fri, 4 Aug 2017 18:27:13 -0700
Subject: [PATCH] nodesigner: make fully copy of key to avoid mutation

---
 nodesigner.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/nodesigner.go b/nodesigner.go
index e34bb72c3..2155058af 100644
--- a/nodesigner.go
+++ b/nodesigner.go
@@ -17,8 +17,13 @@ type nodeSigner struct {
 // newNodeSigner creates a new instance of the nodeSigner backed by the target
 // private key.
 func newNodeSigner(key *btcec.PrivateKey) *nodeSigner {
+	priv := &btcec.PrivateKey{}
+	priv.Curve = btcec.S256()
+	priv.PublicKey.X = key.X
+	priv.PublicKey.Y = key.Y
+	priv.D = key.D
 	return &nodeSigner{
-		privKey: key,
+		privKey: priv,
 	}
 }