fixed debug logging to not use up one extra file descriptor per connection
fixed debug logging to not use up one extra file descriptor per connection

git-svn-id: 6ed3528c1be4534134272ad6dd050eeaa1f628d3@4448 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda

svn2github/libtorrent-trunk,svn2github/libtorrent-trunk,svn2github/libtorrent-trunk,svn2github/libtorrent-trunk