Scrutinizer Auto-Fixes

@WyriHaximus requested this pull request.

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/WyriHaximus/ReactGuzzle/inspections/ceb6af82-c0e9-4c9c-8f6c-735c1a46a05d

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