Fix format specifiers used for event logging in the listctrl sample.

Don't use "%ld" for int argument (this is harmless but unnecessary) and cast
wxUIntPtr to long before using it with "%ld" as otherwise its size is greater
than that of long in Win64 builds.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75145 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/listctrl/listtest.cpp

@@ -1305,9 +1305,9 @@ void MyListCtrl::OnRightClick(wxMouseEvent& event)
 
 void MyListCtrl::LogEvent(const wxListEvent& event, const wxChar *eventName)
 {
-    wxLogMessage(wxT("Item %ld: %s (item text = %s, data = %ld)"),
+    wxLogMessage(wxT("Item %d: %s (item text = %s, data = %ld)"),
                  event.GetIndex(), eventName,
-                 event.GetText().c_str(), event.GetData());
+                 event.GetText(), static_cast<long>(event.GetData()));
 }
 
 wxString MyListCtrl::OnGetItemText(long item, long column) const