getSetItemBytesOnce does not use skipLocal

[daoshenzzg]

getSetItemBytesOnce does not use skipLocal bug

func (c *jetCache) getSetItemBytesOnce(item *item) (b []byte, cached bool, err error) {
	if c.local != nil {
		b, ok := c.local.Get(item.key)
		if ok {
			c.statsHandler.IncrHit()
			c.statsHandler.IncrLocalHit()
			if bytes.Compare(b, notFoundPlaceholder) == 0 {
				return nil, true, c.errNotFound
			}
			return b, true, nil
		}
	}

}