config_local: use simpler method to return root wrappers
config_local: use simpler method to return root wrappers

Suggested by jzila.

Issue: #1418

keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs