Reuse pieceRequestOrder slice

client.go

@@ -81,6 +81,8 @@ type Client struct {
 	websocketTrackers websocketTrackers
 
 	activeAnnounceLimiter limiter.Instance
+
+	pieceRequestOrder clientPieceRequestOrder
 }
 
 type ipStr string

request-strategy.go

@@ -87,7 +87,8 @@ func (cl *Client) requester() {
 }
 
 func (cl *Client) doRequests() {
-	requestOrder := clientPieceRequestOrder{}
+	requestOrder := &cl.pieceRequestOrder
+	requestOrder.pieces = requestOrder.pieces[:0]
 	allPeers := make(map[*Torrent][]*Peer)
 	// Storage capacity left for this run, keyed by the storage capacity pointer on the storage
 	// TorrentImpl.