Uploader::handleUploadError

private function handleUploadError(UploadResult $uploadResult, UploaderController $controller): UploadResult
{
	$controller->onUploadError($uploadResult);

	if (!$uploadResult->isSuccess())
	{
		$tempFile = $uploadResult->getTempFile();
		if ($tempFile !== null && $tempFile->state !== State::DELETED)
		{
			$tempFile->delete();
		}
	}

	return $uploadResult;
}