When shutting down, or when dns_dbiterator_current() fails, 'node'
shouldn't be detached, because it is NULL at that point.
(cherry picked from commit d36728e42f)
When shutting down, or when dns_dbiterator_current() fails, 'node'
shouldn't be detached, because it is NULL at that point.
(cherry picked from commit d36728e42f)