Existing ShoppingCartItem Quantity Doubled After Calling "CreateOrder" #182
Description
When calling OrdersController.CreateOrder(), the quantity for any already existing ShoppingCartItem object is doubled.
The issue is in OrdersController.AddOrderItemsToCart(). When calling _shoppingCartService.AddToCart(), Nop assumes that you want to increase the quantity of any pre-existing cart items by the specified amount. This code is called strictly from CreateOrder, so it can be assumed that the quantity submitted for a given OrderItemDto is the desired quantity (and any existing quantity on a ShoppingCartItem should be ignored).