Scrutinizer Auto-Fixes

@jwage requested this pull request.

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/jwage/stompvents/inspections/1038f207-9c36-4dea-9b04-13abb43d85e6

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