Fix memory leak when tubes are freed
Fix memory leak when tubes are freed

clear the queue for delayed jobs when a tube is freed

amyvmiwei/beanstalkd,justintung/beanstalkd,handautsav/beanstalkd,davies/beanstalkd,cgvarela/beanstalkd,LomoX-Offical/beanstalkd-win,CompendiumSoftware/beanstalkd,orangeholic/beanstalkd,bmhatfield/beanstalkd,JensRantil/beanstalkd,PhillipMwaniki/beanstalkd,ifduyue/beanstalkd,r3jack/beanstalkd,Qihoo360/beanstalkd-win,kr/beanstalkd,naderman/beanstalkd,qbdsoft/beanstalkd,mickeyouyou/beanstalkd,potatosalad/beanstalkd,wfxiang08/beanstalkd,Qihoo360/beanstalkd-win,wyzssw/beanstalkd,wfxiang08/beanstalkd,mobliyishengyuan/beanstalkd,ifduyue/beanstalkd,lzpfmh/beanstalkd,PhillipMwaniki/beanstalkd,diditaxi/beanstalkd,bmhatfield/beanstalkd,r3jack/beanstalkd,naderman/beanstalkd,lzpfmh/beanstalkd,tdg5/beanstalkd,LomoX-Offical/beanstalkd-win,orangeholic/beanstalkd,qbdsoft/beanstalkd,kr/beanstalkd,potatosalad/beanstalkd,cgvarela/beanstalkd,naderman/beanstalkd,handautsav/beanstalkd,wyzssw/beanstalkd,mobliyishengyuan/beanstalkd,justintung/beanstalkd,yetone/beanstalkd,pinguo-xudianyang/beanstalkd,JensRantil/beanstalkd,davies/beanstalkd,tdg5/beanstalkd,yetone/beanstalkd,diditaxi/beanstalkd,amyvmiwei/beanstalkd,aidaima/beanstalkd,CompendiumSoftware/beanstalkd,pinguo-xudianyang/beanstalkd,aidaima/beanstalkd,mickeyouyou/beanstalkd