fixed race condition when fast resume data was being checked
fixed race condition when fast resume data was being checked


git-svn-id: 6ed3528c1be4534134272ad6dd050eeaa1f628d3@903 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda

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