properly generate TotalMatches...

don't delete empty but existing items from being returned, this could
of also hid dirs...  the DSM-520 depends upon the existance of the
last item (that isn't displayed) to decide if there are more items
in the listing...

[git-p4: depot-paths = "//depot/": change = 814]

ContentDirectory.py

@@ -145,13 +145,20 @@ class ContentDirectoryControl(UPnPPublisher, dict):
 
 		if BrowseFlag == 'BrowseDirectChildren':
 			ch = self.getchildren(ObjectID)[StartingIndex: StartingIndex + RequestedCount]
-			filter(lambda x, d = didl: d.addItem(x) and None, filter(lambda x, s = self: s[x.id].checkUpdate(), ch))
+			# filter out the ones that don't exist anymore, we need
+			# to check against None, since some dirs might be empty
+			# (of valid content) but exist.
+			ochup = filter(lambda x, s = self:
+			    s[x.id].checkUpdate() is not None, ch)
+			filter(lambda x, d = didl: d.addItem(x) and None, ochup)
+			total = len(self.getchildren(ObjectID))
 		else:
 			didl.addItem(self[ObjectID])
+			total = 1
 
 		result = {'BrowseResponse': {'Result': didl.toString() ,
 		    'NumberReturned': didl.numItems(),
-		    'TotalMatches': didl.numItems(),
+		    'TotalMatches': total,
 		    'UpdateID': self[ObjectID].updateID }}
 
 		#log.msg('Returning: %s' % result)