Noway to handle timeouts

[techgarage-ir]

There's no way to handle the timeouts and when destination doesn't send any answers, it still seems like a success ping.
example code:

		pinger, err := probing.NewPinger(hostname)
		pinger.SetPrivileged(true)
		pinger.OnSetup = func() {
			fmt.Println("Setup")
		}
		pinger.OnSend = func(packet *probing.Packet) {
			fmt.Println("Sent: ", packet)
		}
		pinger.OnSendError = func(packet *probing.Packet, err error) {
			fmt.Errorf("Error sending packet: %v", err)
		}
		pinger.OnRecv = func(packet *probing.Packet) {
			fmt.Println("Received: ", packet)
		}
		pinger.OnRecvError = func(err error) {
			fmt.Errorf("Error receiving packet: %v", err)
		}
		pinger.OnFinish = func(stats *probing.Statistics) {
			fmt.Printf("Ping statistics for %s: rtt -> %.2f / %.2f / %.2f ms packet loss: %.2f%%\n", hostname, stats.MinRtt.Seconds()*1000, stats.AvgRtt.Seconds()*1000, stats.MaxRtt.Seconds()*1000, stats.PacketLoss)
		}
		pinger.OnDuplicateRecv = func(packet *probing.Packet) {
			fmt.Println("Duplicate: ", packet)
		}
		pinger.Count = 4
		pinger.Timeout = 4 * time.Second
		bg := context.Background()
		ct, _ := context.WithTimeout(bg, 4*time.Second)
		err = pinger.RunWithContext(ct) // Blocks until finished.
		if err != nil {
			fmt.Println("ERROR PINGING..")
			fmt.Errorf("Error running pinger: %v", err)
			return false, err.Error(), err
		}
		fmt.Println("DONE!")

it triggers Setup and Recv events but no errors appear in failed pings

[SuperQ]

/duplicate #19