Extract fetch to its own function

Signed-off-by: Jakub Sokołowski <jakub@status.im>

main.go

@@ -73,7 +73,7 @@ func main() {
 	g.SetManagerFunc(vm.Layout)
 
 	// Start RPC calling routine
-	go peers.Fetch(g)
+	go peers.FetchLoop(g)
 
 	if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
 		log.Panicln(err)

peers.go

@@ -22,21 +22,26 @@ func NewPeersState(host string, port int) *PeersState {
 	return &PeersState{c: c}
 }
 
-func (p *PeersState) Fetch(g *gocui.Gui) {
+func (p *PeersState) FetchLoop(g *gocui.Gui) {
 	for {
 		select {
 		case <-threadDone:
 			return
 		default:
+			peers := p.Fetch()
+			writePeers(g, peers)
+		}
+		<-time.After(interval * time.Second)
+	}
+}
+
+func (p *PeersState) Fetch() []Peer {
 	peers, err := p.c.getPeers()
 	if err != nil {
 		log.Panicln(err)
 	}
 	p.list = peers
-			writePeers(g, peers)
+	return peers
-		}
-		<-time.After(interval * time.Second)
-	}
 }
 
 func writePeers(g *gocui.Gui, peers []Peer) {