deni2s

Related to https://github.com/JamesHeinrich/phpThumb/issues/205. Please see my comment under that issue.

https://github.com/JamesHeinrich/phpThumb/pull/208 should fix the issue in first comment. @badbadmonkey what happens is that [since 8.x compiler throws warnings](https://www.php.net/manual/en/errorfunc.configuration.php#ini.error-reporting) about using values which are not set. Those are sent before headers...