Fixed Upnp bug

ethereum.go

@@ -350,7 +350,7 @@ func (s *Ethereum) WaitForShutdown() {
 func (s *Ethereum) upnpUpdateThread() {
 	// Go off immediately to prevent code duplication, thereafter we renew
 	// lease every 15 minutes.
-	timer := time.NewTimer(0 * time.Second)
+	timer := time.NewTimer(5 * time.Minute)
 	lport, _ := strconv.ParseInt(s.Port, 10, 16)
 	first := true
 out:

natupnp.go

@@ -246,6 +246,10 @@ func soapRequest(url, function, message string) (r *http.Response, err error) {
 	//fmt.Println(fullMessage)
 
 	r, err = http.DefaultClient.Do(req)
+	if err != nil {
+		return
+	}
+
 	if r.Body != nil {
 		defer r.Body.Close()
 	}