Merged revisions 281430 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.6.2

........
  r281430 | dvossel | 2010-08-09 15:46:50 -0500 (Mon, 09 Aug 2010) | 13 lines
  
  fixes SIP peers memory leak
  
  We zeroed out the peer's addr before it was removed from the
  peers_by_ip container.  This made it impossible to be removed
  from the container as the addr is the key used by the container
  to find the peer.
  
  (closes issue #17774)
  Reported by: kkm
  Patches:
        017774-sip-peer-leak-1.6.2.10.diff uploaded by kkm (license 888)
        017774-sip-peer-leak-1.8.diff uploaded by kkm (license 888)
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@281432 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -12652,7 +12652,6 @@ static int expire_register(const void *data)
 
 	peer->expire = -1;
 	peer->portinuri = 0;
-	memset(&peer->addr, 0, sizeof(peer->addr));
 
 	destroy_association(peer);	/* remove registration data from storage */
 	set_socket_transport(&peer->socket, peer->default_outbound_transport);
@@ -12681,6 +12680,10 @@ static int expire_register(const void *data)
 		}
 	}
 
+	/* Only clear the addr after we check for destruction.  The addr must remain
+	 * in order to unlink from the peers_by_ip container correctly */
+	memset(&peer->addr, 0, sizeof(peer->addr));
+
 	unref_peer(peer, "removing peer ref for expire_register");
 
 	return 0;