Fix a segfault in rTorrent when running a large number of torrents.

From Tobias Ulmer; ok espie@

net/libtorrent/Makefile

@@ -1,8 +1,9 @@
-# $OpenBSD: Makefile,v 1.25 2010/11/26 15:00:45 espie Exp $
+# $OpenBSD: Makefile,v 1.26 2011/01/31 14:59:38 naddy Exp $
 
 COMMENT=		BitTorrent library written in C++
 
 DISTNAME=		libtorrent-0.12.6
+REVISION=		0
 SHARED_LIBS +=  	torrent              17.0     # .11.6
 CATEGORIES=		net devel
 

net/libtorrent/patches/patch-src_torrent_poll_kqueue_cc

@@ -1,6 +1,14 @@
-$OpenBSD: patch-src_torrent_poll_kqueue_cc,v 1.1 2008/11/25 16:21:28 naddy Exp $
+$OpenBSD: patch-src_torrent_poll_kqueue_cc,v 1.2 2011/01/31 14:59:38 naddy Exp $
---- src/torrent/poll_kqueue.cc.orig	Tue Oct 28 04:48:48 2008
+
-+++ src/torrent/poll_kqueue.cc	Sun Nov 23 21:17:59 2008
+The number of events is used to index an array of maxOpenSockets
+(file descriptors) elements. If there are fewer fds than maxEvents,
+this will cause a segfault.
+
+Limit the number of events to the number of fds with an upper limit of
+maxEvents.
+
+--- src/torrent/poll_kqueue.cc.orig	Thu Nov 12 09:03:58 2009
++++ src/torrent/poll_kqueue.cc	Sat Jan 29 01:04:59 2011
 @@ -37,6 +37,7 @@
  #include "config.h"
  
@@ -9,3 +17,12 @@ $OpenBSD: patch-src_torrent_poll_kqueue_cc,v 1.1 2008/11/25 16:21:28 naddy Exp $
  
  #include <algorithm>
  #include <unistd.h>
+@@ -115,7 +116,7 @@ PollKQueue::create(int maxOpenSockets) {
+ 
+ PollKQueue::PollKQueue(int fd, int maxEvents, int maxOpenSockets) :
+   m_fd(fd),
+-  m_maxEvents(maxEvents),
++  m_maxEvents((maxOpenSockets < maxEvents) ? maxOpenSockets : maxEvents),
+   m_waitingEvents(0),
+   m_changedEvents(0),
+   m_stdinEvent(NULL) {