builder/vmware: Don't start HTTP server if we specified no files

builder/vmware/step_http_server.go

@@ -25,7 +25,9 @@ func (s *stepHTTPServer) Run(state map[string]interface{}) multistep.StepAction
 	config := state["config"].(*config)
 	ui := state["ui"].(packer.Ui)
 
-	httpPort := 8080
+	httpPort := 0
+	if config.HTTPDir != "" {
+		httpPort = 8080
 		httpAddr := fmt.Sprintf(":%d", httpPort)
 
 		ui.Say(fmt.Sprintf("Starting HTTP server on port %d", httpPort))
@@ -42,6 +44,7 @@ func (s *stepHTTPServer) Run(state map[string]interface{}) multistep.StepAction
 		fileServer := http.FileServer(http.Dir(config.HTTPDir))
 		server := &http.Server{Addr: httpAddr, Handler: fileServer}
 		go server.Serve(s.l)
+	}
 
 	// Save the address into the state so it can be accessed in the future
 	state["http_port"] = httpPort