acm_softint(), uses for-loop to traverse urbs_in_error_delay bitmapAcked-by: Oliver Neukum <oneukum@xxxxxxxx>
bit by bit to find and clear set bits.
We can do it better by using for_each_test_and_clear_bit(), because it
doesn't test already clear bits.
Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx>