Scrutinizer Auto-Fixes

@Metabor requested this pull request.

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Metabor/Statemachine/inspections/24b880f7-3a61-4c70-8eeb-03b502ed8a54

Enabled analysis tools:
 - PHP Analyzer
 - PHP Mess Detector
 - PHP Code Sniffer
 - PHP CS Fixer
 - Security Advisory Checker
 - PHP Code Coverage
 - PHP Copy/Paste Detector
 - PHP Lines Of Code
 - PHP PDepend
 - External Code Coverage
 - PHP Change Tracking Analyzer