allow multi_desktop even with multi monitors config

git-svn-id: http://tint2.googlecode.com/svn/trunk@104 121b4492-b84c-0410-8b4c-0d4edfb3f3cc

src/tint.c

@@ -478,7 +478,7 @@ void event_expose (XEvent *e)
 
 void event_configure_notify (Window win)
 {
-   if (panel_mode != SINGLE_MONITOR) return;
+   if (nb_panel == 1) return;
    if (server.nb_monitor == 1) return;
 
    Task *tsk = task_get_task (win);