Remove GTK_DIALOG_NO_SEPARATOR usage, use 'gtk-close'
Remove GTK_DIALOG_NO_SEPARATOR usage, use 'gtk-close'

xfce-mirror/xfce4-genmon-plugin,tonypaulic/xfce4-genmon-plugin,tonypaulic/xfce4-genmon-plugin,xfce-mirror/xfce4-genmon-plugin,tonypaulic/xfce4-genmon-plugin,xfce-mirror/xfce4-genmon-plugin