fixup! Kraken: Sub Channel improvements

exchanges/kraken/kraken_websocket.go

@@ -450,8 +450,8 @@ func (k *Kraken) wsProcessTickers(response []any, pair currency.Pair) error {
 	if !ok {
 		return errors.New("received invalid ticker data")
 	}
-	data := make([]float64, 9)
-	for i, b := range []byte("abcvlho") { // p and t skipped
+	data := map[string]float64{}
+	for _, b := range []byte("abcvlho") { // p and t skipped
 		key := string(b)
 		a, ok := t[key].([]any)
 		if !ok {
@@ -466,18 +466,18 @@ func (k *Kraken) wsProcessTickers(response []any, pair currency.Pair) error {
 		if err != nil {
 			return fmt.Errorf("received invalid ticker data: %w", err)
 		}
-		data[i] = f
+		data[key] = f
 	}
 
 	k.Websocket.DataHandler <- &ticker.Price{
 		ExchangeName: k.Name,
-		Ask:          data[0],
-		Bid:          data[1],
-		Close:        data[2],
-		Volume:       data[3],
-		Low:          data[6],
-		High:         data[7],
-		Open:         data[8],
+		Ask:          data["a"],
+		Bid:          data["b"],
+		Close:        data["c"],
+		Volume:       data["v"],
+		Low:          data["l"],
+		High:         data["h"],
+		Open:         data["o"],
 		AssetType:    asset.Spot,
 		Pair:         pair,
 	}