Scrutinizer Auto-Fixes

@royopa requested this pull request.

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/royopa/citationbuilder/inspections/bc2f232d-6ac9-4b40-bae1-5a843c452b26

Enabled analysis tools:
 - PHP Analyzer
 - PHP PDepend
 - PHP Similarity Analyzer
 - PHP Change Tracking Analyzer