Fix two lint warnings

serverutil/http.go

@@ -115,8 +115,9 @@ func Serve(h http.Handler, config *ServerConfig, addr string) error {
 
 	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
 
-	// Notify systemd that we are ready to serve.
-	daemon.SdNotify(false, "READY=1")
+	// Notify systemd that we are ready to serve. This call is
+	// allowed to fail (in case there is no systemd).
+	daemon.SdNotify(false, "READY=1") // nolint
 
 	err = srv.Serve(l)
 	if err != http.ErrServerClosed {
@@ -132,7 +133,7 @@ func defaultHandler(h http.Handler) http.Handler {
 
 	// Add an endpoint for HTTP health checking probes.
 	root.Handle("/health", http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		io.WriteString(w, "OK")
+		io.WriteString(w, "OK") // nolint
 	}))
 
 	// Add an endpoint to serve Prometheus metrics.