Revert "MEDIUM: queue: unlock as soon as possible"

This reverts commit 5b3927531145384bad8d2b46ca21f017afde81c7.

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