fixed hand at shutdown

Transports.cpp

@@ -445,6 +445,8 @@ namespace transport
 	}	
 
 	void Transports::HandlePeerCleanupTimer (const boost::system::error_code& ecode)
+	{
+		if (ecode != boost::asio::error::operation_aborted)
 		{
 			auto ts = i2p::util::GetSecondsSinceEpoch ();
 			for (auto it = m_Peers.begin (); it != m_Peers.end (); )
@@ -462,4 +464,5 @@ namespace transport
 		}	
 	}
 }
+}