IsSuccessful always false when using RestResponse<T>

[kingjan1999]

When using the latest RestSharp version, the property IsSuccessful of RestReponse<T> is always false. When using RestResponse, IsSuccessful is set to true whenever the request was successful.

Expected Behavior

The value of IsSuccessful does not depend on whether you use RestResponse<T> or RestResponse.

Actual Behavior

The value of IsSuccessful does depend on whether you use RestResponse<T> or RestResponse.

Steps to Reproduce the Problem

Code example:

    public class Program
    {
        class GithubRepo
        {
            public int Id { get; set; }
            public string Name { get; set; }
        }

        public static async Task Main(string[] args)
        {
            var restClient = new RestClient("https://api.github.com/");
            var request = new RestRequest("repos/RestSharp/RestSharp", Method.Get);
            var response1 = await restClient.ExecuteAsync<GithubRepo>(request);
            var response2 = await restClient.ExecuteAsync(request);
            
            Console.WriteLine(response1.IsSuccessful);
            Console.WriteLine(response2.IsSuccessful);            
        }
    }

This outputs:

False
True

Using RestSharp 106, the result is

True
True

Specifications

• Version: 107.0.0.-preview.13
• Platform: .NET Core 3.1 @ Ubuntu
• Subsystem: