Update library/Zend/Cache/Storage/Plugin/OptimizeByFactor.php
Update library/Zend/Cache/Storage/Plugin/OptimizeByFactor.php

Removed strict check to just make it PRS-2 compliant

bvarent/zend-cache,MadCat34/zend-cache,Maks3w/zend-cache,kynx/zend-cache