should no defer when detach
should no defer when detach

Signed-off-by: Lifubang <f7995024452b918841bf5c3fd35e341b9f47c30c@acmcoder.com>

estesp/containerd,thaJeztah/containerd,dmcgowan/containerd,containerd/containerd,containerd/containerd,miaoyq/containerd,estesp/containerd,dmcgowan/containerd,crosbymichael/containerd,mikebrow/containerd,miaoyq/containerd,thaJeztah/containerd,vdemeester/containerd,vdemeester/containerd,crosbymichael/containerd,mikebrow/containerd