all: use gometalinter.v2, fix new gosimple issues (#15650)

4 files changed, 14 insertions, 15 deletions

diff --git a/p2p/discv5/net.go b/p2p/discv5/net.go
index a39cfcc64..2fbb60824 100644
--- a/p2p/discv5/net.go
+++ b/p2p/discv5/net.go
@@ -684,7 +684,7 @@ func (net *Network) refresh(done chan<- struct{}) {
 		seeds = net.nursery
 	}
 	if len(seeds) == 0 {
-		log.Trace(fmt.Sprint("no seed nodes found"))
+		log.Trace("no seed nodes found")
 		close(done)
 		return
 	}
diff --git a/p2p/discv5/ntp.go b/p2p/discv5/ntp.go
index f78d5dc43..4fb5f657a 100644
--- a/p2p/discv5/ntp.go
+++ b/p2p/discv5/ntp.go
@@ -54,10 +54,10 @@ func checkClockDrift() {
 		howtofix := fmt.Sprintf("Please enable network time synchronisation in system settings")
 		separator := strings.Repeat("-", len(warning))
 
-		log.Warn(fmt.Sprint(separator))
-		log.Warn(fmt.Sprint(warning))
-		log.Warn(fmt.Sprint(howtofix))
-		log.Warn(fmt.Sprint(separator))
+		log.Warn(separator)
+		log.Warn(warning)
+		log.Warn(howtofix)
+		log.Warn(separator)
 	} else {
 		log.Debug(fmt.Sprintf("Sanity NTP check reported %v drift, all ok", drift))
 	}
diff --git a/p2p/discv5/ticket.go b/p2p/discv5/ticket.go
index 48dd114f0..193cef4be 100644
--- a/p2p/discv5/ticket.go
+++ b/p2p/discv5/ticket.go
@@ -398,12 +398,12 @@ func (s *ticketStore) nextRegisterableTicket() (t *ticketRef, wait time.Duration
 			//s.removeExcessTickets(topic)
 			if len(tickets.buckets) != 0 {
 				empty = false
-				if list := tickets.buckets[bucket]; list != nil {
-					for _, ref := range list {
-						//debugLog(fmt.Sprintf(" nrt bucket = %d node = %x sn = %v wait = %v", bucket, ref.t.node.ID[:8], ref.t.serial, time.Duration(ref.topicRegTime()-now)))
-						if nextTicket.t == nil || ref.topicRegTime() < nextTicket.topicRegTime() {
-							nextTicket = ref
-						}
+
+				list := tickets.buckets[bucket]
+				for _, ref := range list {
+					//debugLog(fmt.Sprintf(" nrt bucket = %d node = %x sn = %v wait = %v", bucket, ref.t.node.ID[:8], ref.t.serial, time.Duration(ref.topicRegTime()-now)))
+					if nextTicket.t == nil || ref.topicRegTime() < nextTicket.topicRegTime() {
+						nextTicket = ref
 					}
 				}
 			}
diff --git a/p2p/simulations/network.go b/p2p/simulations/network.go
index fd8777673..f3dda2e44 100644
--- a/p2p/simulations/network.go
+++ b/p2p/simulations/network.go
@@ -403,9 +403,8 @@ func (self *Network) getNodeByName(name string) *Node {
 func (self *Network) GetNodes() (nodes []*Node) {
 	self.lock.Lock()
 	defer self.lock.Unlock()
-	for _, node := range self.Nodes {
-		nodes = append(nodes, node)
-	}
+
+	nodes = append(nodes, self.Nodes...)
 	return nodes
 }
 
@@ -477,7 +476,7 @@ func (self *Network) InitConn(oneID, otherID discover.NodeID) (*Conn, error) {
 	if err != nil {
 		return nil, err
 	}
-	if time.Now().Sub(conn.initiated) < dialBanTimeout {
+	if time.Since(conn.initiated) < dialBanTimeout {
 		return nil, fmt.Errorf("connection between %v and %v recently attempted", oneID, otherID)
 	}
 	if conn.Up {