show first item added with InsertItem() correctly (part of patch 833247)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25557 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listctrl.cpp

@@ -1565,6 +1565,9 @@ long wxListCtrl::InsertItem(wxListItem& info)
         {
             // take copy of attributes
             data->attr = new wxListItemAttr(*info.GetAttributes());
+
+            // and remember that we have some now...
+            m_hasAnyAttr = TRUE;
         }
     };