Fix error when returning a C# type from a script function

Upsilon/Binder/VariableSymbols/ScriptFunctionVariableSymbol.cs

@@ -69,7 +69,7 @@ namespace Upsilon.Binder.VariableSymbols
         public ImmutableArray<VariableSymbol> Parameters { get; }
         public bool                           IsBound    { get; set; }
 
-        public ScriptFunctionVariableOption(Type resultType, ImmutableArray<VariableSymbol> parameters) : base(resultType)
+        public ScriptFunctionVariableOption(TypeContainer resultType, ImmutableArray<VariableSymbol> parameters) : base(resultType)
         {
             Parameters = parameters;
         }