+#ifdef HAVE_APPINDICATOR_029
+ /* gdk_thread_enter/leave only used to workaround mutex bug
+ * of appindicator < 0.2.9, so do not call gdk_threads_init
+ * if useless. Calling this function leads to
+ * crash "Attempt to unlock mutex that was not locked" with
+ * GLib 2.41.2 (new checking) probably due to bugs in GTK
+ * itself.
+ */