feedback not ending immediately when lfb_event_end_feedback() is called

If the triggered event has the timeout set to 0 and has started looping then calling lfb_event_end_feedback () will only stop the looping, but not end the feedback immediately.

This can be reproduced by running fbcli -t 0 If you hit enter <RETURN> before the sound starts looping then it will end immediately.

If you hit enter <RETURN> only after the sound starts looping it will keep playing until it ends naturally. In that case feedbackd will also not print the debug message: Sound XYZ cancelled.