Better to not use `error` as var name (might eclipse the error type) for
clarity and to prevent subtle bugs.
Docker-DCO-1.1-Signed-off-by: Francisco Carriedo <fcarriedo@gmail.com> (github: fcarriedo)
Upstream-commit: ea7b8ea03f5c2222060afe435e907c1ab855a44b
Component: engine