[cache][memcached]Fixed wrong variable name
[cache][memcached]Fixed wrong variable name


Rican7/cache,piwik/cache,jenniferyien/cache,doktorsitesi/cache,Ocramius/cache,Tobion/cache,doctrine/cache,mpdude/cache,robocoder/cache,robocoder/cache,doktorsitesi/cache,anonpain/cache,jeskew/cache,guilhermeblanco/cache