Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Spomky-Labs/oauth2-server-mac-token/inspections/519ba041-0249-4e2a-be7c-bd626cbdb444

Enabled analysis tools:
 - PHP Analyzer
 - PHP Mess Detector
 - PHP Code Sniffer
 - Security Advisory Checker
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 - PHP PDepend
 - External Code Coverage
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Merge pull request #2 from Spomky-Labs/scrutinizer-patch-1

Scrutinizer Auto-Fixes