A trivial mistake in the code comment

[dushaoshuai]

https://github.com/robfig/cron/blob/ccba498c397bb90a9c84945bbb0f7af2d72b6309/cron.go#L193

func (c *Cron) Entry(id EntryID) Entry {
	for _, entry := range c.Entries() {
		if id == entry.ID {
			return entry
		}
	}
	return Entry{}
}

The zero value for a struct is not nil.

[robfig]

I agree.. I would merge a PR fixing it. Thanks