fixes files that were left open in write mode by mistake, policy invariant check fix, fixed static assert being hit

libtorrent/src/policy.cpp

@@ -1470,6 +1470,7 @@ namespace libtorrent
 			{
 				policy::peer* p = static_cast<policy::peer*>(*i);
 				if (p == 0) continue;
+				if (p->connection == 0) continue;
 				TORRENT_ASSERT(std::find_if(m_peers.begin(), m_peers.end()
 					, match_peer_connection(*p->connection)) != m_peers.end());
 			}

libtorrent/src/storage.cpp

@@ -460,6 +460,8 @@ namespace libtorrent
 					->set_size(file_iter->size);
 			}
 		}
+		// close files that were opened in write mode
+		m_files.release(this);
 	}
 
 	void storage::release_files()