Fix typo on lib/rack/session/pool.rb
Fix typo on lib/rack/session/pool.rb

wildjcrt/rack,jeremyf/rack,davidcelis/rack,gioele/rack,Eric-Guo/rack,getaroom/rack,stepri/rack,imtayadeway/rack,deepj/rack,eavgerinos/rack,lgierth/rack,shaneog/rack,evanphx/rack,AMekss/rack,nmk/rack,ganmacs/rack,Codeman655/rack,travis-repos/rack,Comcast/rack,wildjcrt/rack,trexnix/rack,Eric-Guo/rack,arronmabrey/rack,rwz/rack,wildjcrt/rack,shaneog/rack,liamseanbrady/rack,evanphx/rack,gioele/rack,keepcosmos/rack,evanphx/rack,ngpestelos/rack,eavgerinos/rack,Eric-Guo/rack,chneukirchen/rack,ngpestelos/rack,wjordan/rack,tylergannon/rack,jackxxu/rack,jackxxu/rack,tricknotes/rack,fabianrbz/rack,laplaceliu/rack,maclover7/rack,eavgerinos/rack,ganmacs/rack,nmk/rack,jeremyf/rack,davidcelis/rack,liamseanbrady/rack,gfvcastro/rack,eins78/rack,imtayadeway/rack,Comcast/rack,ngpestelos/rack,sigmavirus24/rack,davydovanton/rack,maclover7/rack,trexnix/rack,Codeman655/rack,joevandyk/rack,stepri/rack,krainboltgreene/lack,deepj/rack,davydovanton/rack,getaroom/rack,keepcosmos/rack,keithduncan/rack,jackxxu/rack,Comcast/rack,rwz/rack,sigmavirus24/rack,wjordan/rack,jeremyf/rack,paulrogers/rack,zjsxwc/rack,rkh/rack,shaneog/rack,ktheory/rack,tricknotes/rack,akihiro17/rack,nmk/rack,ktheory/rack,eins78/rack,fabianrbz/rack,arronmabrey/rack,zjsxwc/rack,AMekss/rack,akihiro17/rack,keepcosmos/rack,tylergannon/rack,ganmacs/rack,keithduncan/rack,fabianrbz/rack,trexnix/rack,sigmavirus24/rack,keithduncan/rack,deepj/rack,akihiro17/rack,gfvcastro/rack,tylergannon/rack,eins78/rack,laplaceliu/rack,rwz/rack,chneukirchen/rack,gioele/rack,supzann3/rack,wjordan/rack,gfvcastro/rack,davidcelis/rack,rkh/rack,laplaceliu/rack,zjsxwc/rack,AMekss/rack,liamseanbrady/rack,supzann3/rack,chneukirchen/rack,jhodder/rack,supzann3/rack,x-team/rack-cgmasters,imtayadeway/rack,davydovanton/rack,Codeman655/rack,getaroom/rack,stepri/rack,arronmabrey/rack,maclover7/rack