Refactoring

Src/AST/Myc.Ast.Compiler.TCO.pas

@@ -246,7 +246,7 @@ begin
         Result := Node
     else
         // Rebuild, preserving the original CallNode metadata
-        Result := TMacroExpansionNode.Create(Node.CallNode, newBody.AsTypedNode);
+        Result := TAst.MacroExpansionNode(Node.CallNode, newBody);
 end;
 
 function TAstTCO.VisitFunctionCall(const Node: IFunctionCallNode): IAstNode;