The updateStatus() function should not interrupt the user and reset his position while he is dragging the volume slider.

Close #6652
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
(cherry picked from commit e91edd90eaf9cd4339b45fd90f8af4fe8a3b31b3)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>