Spoofchecker::isSuspicious $errorCode always null

### Description

The following code:

```php
<?php

$sc = new SpoofChecker();
var_dump($sc->isSuspicious('à̀', $error), $error);
```

Resulted in this output:
```
bool(true)
NULL
```

But I expected this output instead:
```
bool(true)
int(32)
```


### PHP Version

all

### Operating System

_No response_