Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Spomky-Labs/oauth2-server/inspections/c889b63c-35de-4cb8-adbf-8b341493092f

Enabled analysis tools:
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 - PHP Code Sniffer
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Merge pull request #7 from Spomky-Labs/scrutinizer-patch-1

Scrutinizer Auto-Fixes