Remove DataProvider from CFWL_WidgetProperties

xfa/fwl/core/cfwl_listbox.cpp

Index: xfa/fwl/core/cfwl_listbox.cpp
diff --git a/xfa/fwl/core/cfwl_listbox.cpp b/xfa/fwl/core/cfwl_listbox.cpp
index bf7798978a9ec667d6c93579a8fc2d86e6c13a8c..784bf24de898be8fb615de5cf4b9b8743c0aa9ba 100644
--- a/xfa/fwl/core/cfwl_listbox.cpp
+++ b/xfa/fwl/core/cfwl_listbox.cpp
@@ -29,7 +29,7 @@ void CFWL_ListBox::Initialize() {
   ASSERT(!m_pIface);
 
   m_pIface = pdfium::MakeUnique<IFWL_ListBox>(
-      m_pApp, pdfium::MakeUnique<CFWL_WidgetProperties>(this), nullptr);
+      m_pApp, pdfium::MakeUnique<CFWL_WidgetProperties>(), nullptr);
 
   CFWL_Widget::Initialize();
 }