修正bug，新添加的商品购物车点编辑会闪退，自动设置送货方式，图片url修改

iCemarose/Class/UI/Product/KWMProductDetailVC.m

@@ -220,10 +220,14 @@
         [[KWMShoppingCart sharedInstance] increaseProductWithVariantId:identifier quantity:quantity callback:^(NSError *error, KWMCartResult *cart) {
             if (cart.items.firstObject && !cart.items.firstObject.product_id) {
                 KWMShopCartModel *model = cart.items.firstObject;
-                model.imageStr = [KWMImageUtil getProductImageUrl:this.product.identifier ImageSize:NormalImage];
+                BUYImageLink *il = this.product.images.firstObject;
+//                model.imageStr = [KWMImageUtil getProductImageUrl:this.product.identifier ImageSize:NormalImage];
+                model.imageStr = [KWMImageUtil getProductImageUrlByOriginalUrl:il.sourceURL.absoluteString ImageSize:NormalImage];
                 model.name = this.product.title;
+                model.brand = this.product.vendor;
                 model.size = variant.title;
                 model.price = variant.price.floatValue;
+                model.product_id = this.product.identifier;
             }
            if (!error) {
                [this showToast:@"添加成功"];

iCemarose/Class/UI/ShopCart/KWMBeforePayVC.m

@@ -455,7 +455,7 @@
         this.checkout = checkout;
         [this initData];
         [this.userDao saveCheckoutCache:responseObject[@"checkout"]];
-        if(!this.checkout.shippingAddress) {
+        if(!this.checkout.shippingRate) {
             [this requestShippingData];
         }
     } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {