Tao: clear permanent menu before each parse

pkg/restaurants/restaurant.go

@@ -55,6 +55,10 @@ func (restaurant *Restaurant) clearMenus() {
 	}
 }
 
+func (restaurant *Restaurant) clearPermanentMenus() {
+	restaurant.permanent = []Meal{}
+}
+
 func (restaurant *Restaurant) MarshalJSON() ([]byte, error) {
 	return json.Marshal(&RestaurantJSON{
 		Id:             restaurant.id,

pkg/restaurants/tao.go

@@ -24,6 +24,7 @@ func NewTaoRestaurant(url string, name string, id int) *TaoRestaurant {
 
 func (restaurant *TaoRestaurant) Parse() {
 	restaurant.clearMenus()
+	restaurant.clearPermanentMenus()
 	resp, err := http.Get(restaurant.url)
 	if err != nil {
 		return