Fix the computation of the active_sockets number.
Fix the computation of the active_sockets number.

If we added a new socket in the recycle_acceptor, we should not decrement the
number of active sockets.

ubf/mochiweb,jasonjli/mochiweb,tsingpan/mochiweb,vinoski/mochiweb,ubf/mochiweb,vinoski/mochiweb,robertkowalski/mochiweb,jasonjli/mochiweb,riak-synrc/mochiweb,danogwok/mochiweb,tsingpan/mochiweb,robertkowalski/mochiweb,danogwok/mochiweb