[bug] Combo crashes with empty string item

[aj3423]

What happend?

Combobox crashes if the items contain empty string like:
items = []string{"111", "", "333"}

Code example

main.go

package main

import "github.com/AllenDang/giu"

var sel int32

func loop() {
	giu.SingleWindow().Layout(
		giu.Combo("", "", []string{
			"111",
			"", // <------ crash
			"333",
		}, &sel),
	)
}

func main() {
	wnd := giu.NewMasterWindow("", 400, 200, 0)
	wnd.Run(loop)
}

To Reproduce

1. Run my demo
2. will see the crash...

Version

(latest)

OS

Fedora 40