[THRIFT-5871] Improve MAX_MESSAGE_SIZE_CHECK and friends
diff --git a/lib/netstd/Thrift/Protocol/TJSONProtocol.cs b/lib/netstd/Thrift/Protocol/TJSONProtocol.cs
index 170f294..37424a7 100644
--- a/lib/netstd/Thrift/Protocol/TJSONProtocol.cs
+++ b/lib/netstd/Thrift/Protocol/TJSONProtocol.cs
@@ -838,8 +838,8 @@
         {
             switch (type)
             {
-                case TType.Stop: return 0;
-                case TType.Void: return 0;
+                case TType.Stop: return 1;  // T_STOP needs to count itself
+                case TType.Void: return 1;  // T_VOID needs to count itself
                 case TType.Bool: return 1;  // written as int  
                 case TType.Byte: return 1;
                 case TType.Double: return 1;