Avoid leaking tickers

In Go 1.22 and earlier, a ticker needs to be explicitly stopped
when it's no longer useful in order to avoid a resource leak.
In Go 1.23 and later, an orphaned ticker will eventually be
garbage collected, but it's still more thrifty to stop it early.

examples/bandwidth-estimation-from-disk/main.go

@@ -194,6 +194,7 @@ func main() {
 	// * avoids accumulating skew, just calling time.Sleep didn't compensate for the time spent parsing the data
 	// * works around latency issues with Sleep (see https://github.com/golang/go/issues/44343)
 	ticker := time.NewTicker(time.Millisecond * time.Duration((float32(header.TimebaseNumerator)/float32(header.TimebaseDenominator))*1000))
+	defer ticker.Stop()
 	frame := []byte{}
 	frameHeader := &ivfreader.IVFFrameHeader{}
 	currentTimestamp := uint64(0)