Write fatal error to event log if running as service

Signed-off-by: Stefan Scherer <scherer_stefan@icloud.com>

cmd/dockerd/daemon_windows.go

@@ -41,6 +41,9 @@ func notifySystem() {
 // notifyShutdown is called after the daemon shuts down but before the process exits.
 func notifyShutdown(err error) {
 	if service != nil {
+		if err != nil {
+			logrus.Fatal(err)
+		}
 		service.stopped(err)
 	}
 }