Fixed delete functionality null reference exception.

Author: sughosneo

src/eShopOnBlazor/Pages/Catalog/Delete.razor

@@ -3,10 +3,10 @@
 @inject NavigationManager NavigationManager
 @inject ILogger<Delete> Logger
 
+
 <div class="container">
     <div class="row">
         <img class="col-md-6 esh-picture" src="@($"/Pics/{_item.PictureFileName}")">
-
         <dl class="col-md-6 dl-horizontal">
             <dt>
                 Name
@@ -29,15 +29,19 @@
             </dt>
 
             <dd>
-                @_item.CatalogBrand.Brand
+                @{
+                    Console.WriteLine(_item.CatalogBrand != null ? _item.CatalogBrand.Brand : String.Empty);
+                }
             </dd>
 
             <dt>
                 Type
             </dt>
 
             <dd>
-                @_item.CatalogType.Type
+                @{
+                    Console.WriteLine(_item.CatalogType != null ? _item.CatalogType.Type : String.Empty);
+                }
             </dd>
             <dt>
                 Price