docker/docker — pull request #7782 by daehyeok (2014-08-28 15:24:48+00:00)
Title: graph: remove obsolete comments

Graph.Get function already returns nil when the image doesn't exist so
following comment is obsolete.
FIXME: return nil when the image doesn't exist, instead of an error

Signed-off-by: Daehyeok.Mun