Revert "MEDIUM: queue: refine the locking in process_srv_queue()"

This reverts commit 1b648c857bb9e0fb857e86838bcca0c9ed01e2bd.

The recent changes since 5304669e1 MEDIUM: queue: make
pendconn_process_next_strm() only return the pendconn opened a tiny race
condition between stream_free() and process_srv_queue(), as the pendconn
is accessed outside of the lock, possibly while it's being freed. A
different approach is required.
1 file changed