Hold a reference on m_widget for the life of the associated wxWindow object.

This allows removing some ugly hacks, and leaking of GtkWidgets by wxNotebook.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55288 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/taskbar.cpp

@@ -32,6 +32,7 @@ wxTaskBarIconAreaBase::wxTaskBarIconAreaBase()
     if (IsProtocolSupported())
     {
         m_widget = GTK_WIDGET(egg_tray_icon_new("systray icon"));
+        g_object_ref(m_widget);
         gtk_window_set_resizable(GTK_WINDOW(m_widget), false);
 
         wxLogTrace(_T("systray"), _T("using freedesktop.org systray spec"));