Fixed a mutex/queue deadlock occurring when backing up an extreme amount of small files to a slow storage. Fundamental queue logic was broken but did not present a problem as long as there was room in the queue.
Fixed a mutex/queue deadlock occurring when backing up an extreme amount of small files to a slow storage. Fundamental queue logic was broken but did not present a problem as long as there was room in the queue.

fredli74/hashbox,fredli74/hashbox