From ba4a2f77a5b747720ac6a633a880556a0f1cb97e Mon Sep 17 00:00:00 2001
From: Alex <alex@akselrod.org>
Date: Wed, 8 Mar 2017 17:32:52 -0800
Subject: [PATCH] wire/server: allocate hash once per loop to prevent
 overwriting

---
 server.go            | 2 +-
 wire/msgcfheaders.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/server.go b/server.go
index ee6c213a..a237b31b 100644
--- a/server.go
+++ b/server.go
@@ -839,7 +839,6 @@ func (sp *serverPeer) OnGetCFHeaders(_ *peer.Peer, msg *wire.MsgGetCFHeaders) {
 
 	// Generate cfheaders message and send it.
 	headersMsg := wire.NewMsgCFHeaders()
-	var header chainhash.Hash
 	for i := range hashList {
 		// Fetch the raw committed filter header bytes from the
 		// database.
@@ -852,6 +851,7 @@ func (sp *serverPeer) OnGetCFHeaders(_ *peer.Peer, msg *wire.MsgGetCFHeaders) {
 		}
 
 		// Deserialize the hash.
+		var header chainhash.Hash
 		err = header.SetBytes(headerBytes)
 		if err != nil {
 			peerLog.Warnf("Committed filter header deserialize "+
diff --git a/wire/msgcfheaders.go b/wire/msgcfheaders.go
index 411bf8f1..3b9266b1 100644
--- a/wire/msgcfheaders.go
+++ b/wire/msgcfheaders.go
@@ -60,9 +60,9 @@ func (msg *MsgCFHeaders) BtcDecode(r io.Reader, pver uint32) error {
 
 	// Create a contiguous slice of headers to deserialize into in order to
 	// reduce the number of allocations.
-	var cfh chainhash.Hash
 	msg.HeaderHashes = make([]*chainhash.Hash, 0, count)
 	for i := uint64(0); i < count; i++ {
+		var cfh chainhash.Hash
 		err := readElement(r, &cfh)
 		if err != nil {
 			return err