Fix unknown parameters in userdata functions not allowing types

Upsilon/BoundTypes/UserDataBoundTypeDefinition.cs

@@ -201,7 +201,8 @@ namespace Upsilon.BoundTypes
             {
                 var functionParameter = Parameters[i];
                 var callingParameter  = callingParameters[i];
-                if (callingParameter.Type == Type.Unknown || callingParameter.Type == Type.Nil)
+                if (callingParameter.Type == Type.Unknown || callingParameter.Type == Type.Nil ||
+                    functionParameter.Type == Type.Unknown)
                     continue;
 
                 if (!functionParameter.Type.Type.HasFlag(callingParameter.Type))