Update src/ModelContextProtocol.AspNetCore/Authentication/McpAuthenticationHandler.cs

Co-authored-by: Stephen Toub <[email protected]>

Author: localden

src/ModelContextProtocol.AspNetCore/Authentication/McpAuthenticationHandler.cs

@@ -97,10 +97,7 @@ private async Task HandleResourceMetadataRequestAsync()
         };
 
         // Set default resource if not set
-        if (metadata.Resource == null)
-        {
-            metadata.Resource = new Uri(GetBaseUrl());
-        }
+        metadata.Resource ??= new Uri(GetBaseUrl());
 
         Response.StatusCode = StatusCodes.Status200OK;
         Response.ContentType = "application/json";