Was more explicit about deserialization options, fixed some test_responses code

src/Discord.Net/DiscordClient.cs

@@ -107,12 +107,14 @@ namespace Discord
             _serializer.CheckAdditionalContent = true;
             _serializer.MissingMemberHandling = MissingMemberHandling.Error;
 #else
+            _serializer.CheckAdditionalContent = false;
+            _serializer.MissingMemberHandling = MissingMemberHandling.Ignore;
+#endif
             _serializer.Error += (s, e) =>
             {
                 e.ErrorContext.Handled = true;
                 Logger.Error("Serialization Failed", e.ErrorContext.Error);
             };
-#endif
 
             //Networking
             ClientAPI = new RestClient(Config, DiscordConfig.ClientAPIUrl, Log.CreateLogger("ClientAPI"));

src/Discord.Net/Net/Rest/RestClient.cs

@@ -13,6 +13,7 @@ namespace Discord.Net.Rest
 		private readonly DiscordConfig _config;
 		private readonly IRestEngine _engine;
         private string _token;
+        private JsonSerializerSettings _deserializeSettings;
 
         internal Logger Logger { get; }
 
@@ -38,6 +39,15 @@ namespace Discord.Net.Rest
 #else
 			_engine = new BuiltInEngine(config, baseUrl, logger);
 #endif
+
+            _deserializeSettings = new JsonSerializerSettings();
+#if TEST_RESPONSES
+            _deserializeSettings.CheckAdditionalContent = true;
+            _deserializeSettings.MissingMemberHandling = MissingMemberHandling.Error;
+#else
+            _deserializeSettings.CheckAdditionalContent = false;
+            _deserializeSettings.MissingMemberHandling = MissingMemberHandling.Ignore;
+#endif
         }
 
         public async Task<ResponseT> Send<ResponseT>(IRestRequest<ResponseT> request)
@@ -135,22 +145,13 @@ namespace Discord.Net.Rest
 			return responseJson;
 		}
 
-		private JsonSerializerSettings _deserializeSettings = new JsonSerializerSettings();
 		private T DeserializeResponse<T>(string json)
 		{
 #if TEST_RESPONSES
-			if (_deserializeSettings == null)
-			{
-				_deserializeSettings = new JsonSerializerSettings();
-				_deserializeSettings.CheckAdditionalContent = true;
-				_deserializeSettings.MissingMemberHandling = MissingMemberHandling.Error;
-			}
 			if (string.IsNullOrEmpty(json))
 				throw new Exception("API check failed: Response is empty.");
-			return JsonConvert.DeserializeObject<T>(json, _deserializeSettings);
-#else
-			return JsonConvert.DeserializeObject<T>(json);
 #endif
+            return JsonConvert.DeserializeObject<T>(json, _deserializeSettings);
 		}
 	}
 }