ack.err is sometimes an empty object on a put()

[labs-dlugo]

Version: 97aa976c97e6219a9f93095d32c220dcd371ca62

Usually ack.err is an string or a number (clock skew).

But we've been getting just now empty objects ({}).

E.g.

gun.get('foo').get('baz').put('bar', ack => {
  const err = JSON.stringify(ack.err)
  assert(err === '{}')
})

[amark]

oh @danlugo92 sorry I guess github not notifying me anymore, didn't know you had posted htis 7 days ago, :P I hope how fast I replied in chat ... today, when you mentioned it, was helpful :P. Please reference that.