Save original address string and reuse it in Windows UI.

main.go

@@ -23,6 +23,7 @@ var (
 	argPassword = kingpin.Arg("password", "The RCON password.")
 
 	address    *net.UDPAddr
+	addressStr string
 	password   string
 
 	socket       *net.UDPConn
@@ -39,7 +40,7 @@ func initSocketAddr(addr string) (err error) {
 		return
 	}
 
-	address = newAddr
+	address, addressStr = newAddr, addr
 
 	return
 }

main_windows.go

@@ -91,10 +91,6 @@ func runGraphicalUi() (err error) {
 		return
 	}
 	connectAction.Triggered().Attach(func() {
-		addressStr := ""
-		if address != nil {
-			addressStr = address.String()
-		}
 		result, addr, pw, err := runConnectDialog(addressStr, password, dlg)
 		if err != nil {
 			uiLogError(fmt.Sprintf("Failed to run connect dialog: %s", err))