Fix a couple errors from go vet

peer.go

@@ -285,7 +285,6 @@ func (p *Peer) HandleInbound() {
 				p.lastPong = time.Now().Unix()
 			case ethwire.MsgBlockTy:
 				// Get all blocks and process them
-				msg.Data = msg.Data
 				var block, lastBlock *ethchain.Block
 				var err error
 				for i := msg.Data.Len() - 1; i >= 0; i-- {
@@ -438,7 +437,7 @@ func (p *Peer) Start() {
 
 	err := p.pushHandshake()
 	if err != nil {
-		log.Printf("Peer can't send outbound version ack", err)
+		log.Println("Peer can't send outbound version ack", err)
 
 		p.Stop()