Created Unassigned: Named anonymous function is renamed incorrectly [20309]

In AjaxMin 4.x, named anonymous function is renamed incorrectly so my code doesn't work after minified. For example:

Before minification:

```
setTimeout(function test() {
dosomething();
setTimeout(test, 1000);
}, 1000);
```

After minification:

```
setTimeout(function () {
dosomething();
setTimeout(f, 1000); // <-- but f is undefined now, so it won't work.
}, 1000);
```

Thanks,