Scrutinizer Auto-Fixes

@matejvelikonja requested this pull request.

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/matejvelikonja/attendee/inspections/f5478b93-eeaf-474a-b52d-f9fc87cd3a16

Enabled analysis tools:
 - PHP Analyzer
 - PHP Copy/Paste Detector
 - PHP PDepend