Tiny refactor: remove unused local variables
Tiny refactor: remove unused local variables

Signed-off-by: Zhang Wei <14976e959b2860fb06a3c1edbdb1945a4e11b8b5@huawei.com>

maxamillion/runc,mheon/runc,estesp/runc,vbatts/runc,sunyuan3/runc,adrianreber/runc,dqminh/runc,xiaochenshen/runc,rhatdan/runc,vbatts/runc,avagin/runc,cloudfoundry-incubator/runc,docker/runc,rajasec/runc,wking/runc,laijs/runc,coolljt0725/runc,WeiZhang555/runc,WeiZhang555/runc,kolyshkin/runc,cloudfoundry-incubator/runc,WeiZhang555/runc,kolyshkin/runc,jhowardmsft/runc,opencontainers/runc,docker/runc,docker/runc,mYmNeo/runc,stefanberger/runc,rhatdan/runc,xiaochenshen/runc,hqhq/runc,mYmNeo/runc,mheon/runc,dqminh/runc,shishir-a412ed/runc,laijs/runc,rajasec/runc,mikebrow/runc,coolljt0725/runc,kolyshkin/runc,avagin/runc,estesp/runc,cyphar/runc,mikebrow/runc,opencontainers/runc,hqhq/runc,jhowardmsft/runc,wking/runc,jhowardmsft/runc,maxamillion/runc,rhatdan/runc,kolyshkin/runc,crosbymichael/runc,dqminh/runc,mYmNeo/runc,cloudfoundry-incubator/runc,shishir-a412ed/runc,sunyuan3/runc,coolljt0725/runc,mheon/runc,maxamillion/runc,hqhq/runc,opencontainers/runc,opencontainers/runc,rajasec/runc,laijs/runc,justincormack/runc,cyphar/runc,justincormack/runc,rhatdan/runc,wking/runc,crosbymichael/runc,avagin/runc,crosbymichael/runc,dqminh/runc,stefanberger/runc,mikebrow/runc,xiaochenshen/runc,justincormack/runc,vbatts/runc,sunyuan3/runc,adrianreber/runc,stefanberger/runc,adrianreber/runc,shishir-a412ed/runc,cyphar/runc,estesp/runc