Matching hangs forever when empty key is inserted

[bunyk]

I accidentally had empty string in my test data and was not able to figure out why tests hang. Maybe consider ingoring such keys when inserting?

func TestAhoCorasick(t *testing.T) {
    matcher := ahocorasick.NewMatcher()
    matcher.Insert([]byte("adidas"), true)
    matcher.Insert([]byte(""), true)
    matcher.Compile()
    fmt.Println("compiled matcher")

    seq := []byte("adidas sneakers")
    resp := matcher.Match(seq)
    for resp.HasNext() {
        items := resp.NextMatchItem(seq)
        for _, itr := range items {
            fmt.Println("Matched", string(matcher.Key(seq, itr)))
        }
    }
    resp.Release()
}

[iohub]

sure, I will fix it. thx