les: fix staticcheck warnings

les/retrieve.go

@@ -119,7 +119,7 @@ func (rm *retrieveManager) retrieve(ctx context.Context, reqID uint64, req *dist
 	case <-ctx.Done():
 		sentReq.stop(ctx.Err())
 	case <-shutdown:
-		sentReq.stop(fmt.Errorf("Client is shutting down"))
+		sentReq.stop(fmt.Errorf("client is shutting down"))
 	}
 	return sentReq.getError()
 }

les/txrelay.go

@@ -54,51 +54,51 @@ func newLesTxRelay(ps *peerSet, retriever *retrieveManager) *lesTxRelay {
 	return r
 }
 
-func (self *lesTxRelay) Stop() {
-	close(self.stop)
+func (ltrx *lesTxRelay) Stop() {
+	close(ltrx.stop)
 }
 
-func (self *lesTxRelay) registerPeer(p *peer) {
-	self.lock.Lock()
-	defer self.lock.Unlock()
+func (ltrx *lesTxRelay) registerPeer(p *peer) {
+	ltrx.lock.Lock()
+	defer ltrx.lock.Unlock()
 
-	self.peerList = self.ps.AllPeers()
+	ltrx.peerList = ltrx.ps.AllPeers()
 }
 
-func (self *lesTxRelay) unregisterPeer(p *peer) {
-	self.lock.Lock()
-	defer self.lock.Unlock()
+func (ltrx *lesTxRelay) unregisterPeer(p *peer) {
+	ltrx.lock.Lock()
+	defer ltrx.lock.Unlock()
 
-	self.peerList = self.ps.AllPeers()
+	ltrx.peerList = ltrx.ps.AllPeers()
 }
 
 // send sends a list of transactions to at most a given number of peers at
 // once, never resending any particular transaction to the same peer twice
-func (self *lesTxRelay) send(txs types.Transactions, count int) {
+func (ltrx *lesTxRelay) send(txs types.Transactions, count int) {
 	sendTo := make(map[*peer]types.Transactions)
 
-	self.peerStartPos++ // rotate the starting position of the peer list
-	if self.peerStartPos >= len(self.peerList) {
-		self.peerStartPos = 0
+	ltrx.peerStartPos++ // rotate the starting position of the peer list
+	if ltrx.peerStartPos >= len(ltrx.peerList) {
+		ltrx.peerStartPos = 0
 	}
 
 	for _, tx := range txs {
 		hash := tx.Hash()
-		ltr, ok := self.txSent[hash]
+		ltr, ok := ltrx.txSent[hash]
 		if !ok {
 			ltr = &ltrInfo{
 				tx:     tx,
 				sentTo: make(map[*peer]struct{}),
 			}
-			self.txSent[hash] = ltr
-			self.txPending[hash] = struct{}{}
+			ltrx.txSent[hash] = ltr
+			ltrx.txPending[hash] = struct{}{}
 		}
 
-		if len(self.peerList) > 0 {
+		if len(ltrx.peerList) > 0 {
 			cnt := count
-			pos := self.peerStartPos
+			pos := ltrx.peerStartPos
 			for {
-				peer := self.peerList[pos]
+				peer := ltrx.peerList[pos]
 				if _, ok := ltr.sentTo[peer]; !ok {
 					sendTo[peer] = append(sendTo[peer], tx)
 					ltr.sentTo[peer] = struct{}{}
@@ -108,10 +108,10 @@ func (self *lesTxRelay) send(txs types.Transactions, count int) {
 					break // sent it to the desired number of peers
 				}
 				pos++
-				if pos == len(self.peerList) {
+				if pos == len(ltrx.peerList) {
 					pos = 0
 				}
-				if pos == self.peerStartPos {
+				if pos == ltrx.peerStartPos {
 					break // tried all available peers
 				}
 			}
@@ -139,46 +139,46 @@ func (self *lesTxRelay) send(txs types.Transactions, count int) {
 				return func() { peer.SendTxs(reqID, cost, enc) }
 			},
 		}
-		go self.retriever.retrieve(context.Background(), reqID, rq, func(p distPeer, msg *Msg) error { return nil }, self.stop)
+		go ltrx.retriever.retrieve(context.Background(), reqID, rq, func(p distPeer, msg *Msg) error { return nil }, ltrx.stop)
 	}
 }
 
-func (self *lesTxRelay) Send(txs types.Transactions) {
-	self.lock.Lock()
-	defer self.lock.Unlock()
+func (ltrx *lesTxRelay) Send(txs types.Transactions) {
+	ltrx.lock.Lock()
+	defer ltrx.lock.Unlock()
 
-	self.send(txs, 3)
+	ltrx.send(txs, 3)
 }
 
-func (self *lesTxRelay) NewHead(head common.Hash, mined []common.Hash, rollback []common.Hash) {
-	self.lock.Lock()
-	defer self.lock.Unlock()
+func (ltrx *lesTxRelay) NewHead(head common.Hash, mined []common.Hash, rollback []common.Hash) {
+	ltrx.lock.Lock()
+	defer ltrx.lock.Unlock()
 
 	for _, hash := range mined {
-		delete(self.txPending, hash)
+		delete(ltrx.txPending, hash)
 	}
 
 	for _, hash := range rollback {
-		self.txPending[hash] = struct{}{}
+		ltrx.txPending[hash] = struct{}{}
 	}
 
-	if len(self.txPending) > 0 {
-		txs := make(types.Transactions, len(self.txPending))
+	if len(ltrx.txPending) > 0 {
+		txs := make(types.Transactions, len(ltrx.txPending))
 		i := 0
-		for hash := range self.txPending {
-			txs[i] = self.txSent[hash].tx
+		for hash := range ltrx.txPending {
+			txs[i] = ltrx.txSent[hash].tx
 			i++
 		}
-		self.send(txs, 1)
+		ltrx.send(txs, 1)
 	}
 }
 
-func (self *lesTxRelay) Discard(hashes []common.Hash) {
-	self.lock.Lock()
-	defer self.lock.Unlock()
+func (ltrx *lesTxRelay) Discard(hashes []common.Hash) {
+	ltrx.lock.Lock()
+	defer ltrx.lock.Unlock()
 
 	for _, hash := range hashes {
-		delete(self.txSent, hash)
-		delete(self.txPending, hash)
+		delete(ltrx.txSent, hash)
+		delete(ltrx.txPending, hash)
 	}
 }