Update captive portal detection to work without server

netenv/main.go

@@ -15,11 +15,15 @@ var (
 )
 
 func init() {
-	module = modules.Register("netenv", nil, start, nil)
+	module = modules.Register("netenv", prep, start, nil)
 	module.RegisterEvent(NetworkChangedEvent)
 	module.RegisterEvent(OnlineStatusChangedEvent)
 }
 
+func prep() error {
+	return prepOnlineStatus()
+}
+
 func start() error {
 	module.StartServiceWorker(
 		"monitor network changes",