node, rpc: fix linter issues

node/node.go

@@ -324,7 +324,7 @@ func (n *Node) startIPC(apis []rpc.API) error {
 		return err
 	}
 	go func() {
-		n.log.Info("IPC endpoint opened", "url", fmt.Sprintf("%s", n.ipcEndpoint))
+		n.log.Info("IPC endpoint opened", "url", n.ipcEndpoint)
 
 		for {
 			conn, err := listener.Accept()

rpc/http.go

@@ -245,7 +245,6 @@ func (h *virtualHostHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	http.Error(w, "invalid host specified", http.StatusForbidden)
-	return
 }
 
 func newVHostHandler(vhosts []string, next http.Handler) http.Handler {