From e003b67418af511d80514d6499e1e81d20c0951a Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Tue, 18 Oct 2022 22:57:55 +0300
Subject: [PATCH] network: reuse inventory hash list for request hashes

Microoptimization, we can do this because we only use them in handleInvCmd().
---
 pkg/network/server.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg/network/server.go b/pkg/network/server.go
index 092ddfc9c..364ff30bd 100644
--- a/pkg/network/server.go
+++ b/pkg/network/server.go
@@ -751,7 +751,7 @@ func (s *Server) handlePong(p Peer, pong *payload.Ping) error {
 
 // handleInvCmd processes the received inventory.
 func (s *Server) handleInvCmd(p Peer, inv *payload.Inventory) error {
-	reqHashes := make([]util.Uint256, 0)
+	var reqHashes = inv.Hashes[:0]
 	var typExists = map[payload.InventoryType]func(util.Uint256) bool{
 		payload.TXType:    s.mempool.ContainsKey,
 		payload.BlockType: s.chain.HasBlock,