protect from shutdown pkg arriving without havin seen a startup package

hbd

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# $Id: hbd,v 1.8 2006/01/21 17:52:27 andreas Exp $
+# $Id: hbd,v 1.9 2006/04/28 12:15:13 andreas Exp $
 # Wait for heartbeat messages and act on them (or their absence)
 #
 import time, os, string, sys, socket, atexit, select, SocketServer, getopt
@@ -305,7 +305,10 @@ def readsock():
 		log("%s shutdown" % name)
 		hosts[name].newstate(Host.down)
 	if interval > 0:
-		hosts[name].interval=interval
+		try:
+			hosts[name].interval=interval
+		except:
+			pass
 
 
 #