Merge pull request #25 from tintoy/tintoy/renor-nre

Avoid NullReferenceException if "params" property is null.

Author: david-driscoll

src/JsonRpc/Client/Request.cs

@@ -12,6 +12,7 @@ public class Request
 
         public string Method { get; set; }
 
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
         public object Params { get; set; }
     }
-}
+}

src/JsonRpc/Reciever.cs

@@ -78,7 +78,7 @@ protected virtual Renor GetRenor(JToken @object)
             }
 
             var hasParams = request.TryGetValue("params", out var @params);
-            if (hasParams && @params.Type != JTokenType.Array && @params.Type != JTokenType.Object)
+            if (hasParams && @params?.Type != JTokenType.Array && @params?.Type != JTokenType.Object)
             {
                 return new InvalidRequest(requestId, "Invalid params");
             }
@@ -95,4 +95,4 @@ protected virtual Renor GetRenor(JToken @object)
             }
         }
     }
-}
+}