Make lint was complaining about some vetshowed err
Make lint was complaining about some vetshowed err

We often use err as a variable inside of subblocks, and
we don't want golint to complain about it.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #379
Approved by: nalind

projectatomic/buildah,nalind/buildah,nalind/buildah-1,rhatdan/buildah,rhatdan/buildah,TomSweeneyRedHat/buildah,TomSweeneyRedHat/buildah,nalind/buildah-1,TomSweeneyRedHat/buildah,rhatdan/buildah,projectatomic/buildah,nalind/buildah,projectatomic/buildah,nalind/buildah-1,ipbabble/buildah,ipbabble/buildah