commands: Fix broken --appendPort=false

Also make sure to log the correct server URL to the console.

Fixes #4111

commands/commandeer.go

@@ -25,6 +25,8 @@ type commandeer struct {
 	pathSpec    *helpers.PathSpec
 	visitedURLs *types.EvictingStringQueue
 
+	serverPorts []int
+
 	configured bool
 }