Graph.Get function already returns nil when the image doesn't exist so following comment is obsolete.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 <daehyeok@gmail.com> Upstream-commit: 59d58352dfb66a12000d4b65f6c337c7936326e3 Component: engine