Update lib/CppInterOp/CppInterOp.cpp

Author: vgvassilev

lib/CppInterOp/CppInterOp.cpp

@@ -3800,9 +3800,9 @@ TCppObject_t Construct(compat::Interpreter& interp, TCppScope_t scope,
       return nullptr;
     // invoke the constructor (placement/heap) in one shot
     // flag is non-null for placement new, null for normal new
-    void* flag = arena ? reinterpret_cast<void*>(1) : nullptr;
+    void* is_arena = arena ? reinterpret_cast<void*>(1) : nullptr;
     void* result = arena;
-    JC.InvokeConstructor(&result, count, {}, flag);
+    JC.InvokeConstructor(&result, count, /*args=*/{}, is_arena);
     return result;
   }
   return nullptr;