another header optimization

include/libtorrent/aux_/session_impl.hpp

@@ -81,7 +81,6 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/alert.hpp" // for alert_manager
 #include "libtorrent/deadline_timer.hpp"
 #include "libtorrent/socket_io.hpp" // for print_address
-#include "libtorrent/peer_connection.hpp" // for intrusive_ptr_release
 #include "libtorrent/address.hpp"
 
 #ifdef TORRENT_STATS

src/smart_ban.cpp

@@ -55,6 +55,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/extensions/smart_ban.hpp"
 #include "libtorrent/disk_io_thread.hpp"
 #include "libtorrent/aux_/session_impl.hpp"
+#include "libtorrent/peer_connection.hpp"
 
 namespace libtorrent {