Return an empty IcecastStatus struct instead of nil in case of an error.

internal/radio/icecast.go

@@ -61,13 +61,13 @@ type Song struct {
 func IcecastGetStatus(icecastURL string) (*IcecastStatus, error) {
 	resp, err := http.Get(icecastURL)
 	if err != nil {
-		return nil, err
+		return &IcecastStatus{}, err
 	}
 
 	iceStatDTO := &IcecastStatusDTO{}
 
 	if err := json.NewDecoder(resp.Body).Decode(iceStatDTO); err != nil {
-		return nil, err
+		return &IcecastStatus{}, err
 	}
 
 	return &IcecastStatus{