handle deleting an item multiple times, log when we do so I can try

to track it down.. hmm.. maybe need to throw in a back trace..

[git-p4: depot-paths = "//depot/": change = 813]

ContentDirectory.py

@@ -65,6 +65,10 @@ class ContentDirectoryControl(UPnPPublisher, dict):
 		return i.id
 
 	def delItem(self, id):
+		if not self.has_key(id):
+			log.msg('already removed:', id)
+			return
+		log.msg('removing:', id)
 		if isinstance(self[id], Container):
 			while self.children[id]:
 				self.delItem(self.children[id][0])