test fail on  armv7l

This problem occurs only on armv7l:

```
There was 1 error:

1) Test\Ease\FunctionsTest::testHumanFilesize
TypeError: Argument 1 passed to Ease\Functions::humanFilesize() must be of the type int, float given, called in /usr/share/php/EaseCore/Test/Ease/FunctionsTest.php on line 165

/usr/share/php/EaseCore/Functions.php:369
/usr/share/php/EaseCore/Test/Ease/FunctionsTest.php:165
```

