libgit: readonlyNode should implement WrapChild itself
libgit: readonlyNode should implement WrapChild itself

Issue: KBFS-2677

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