Fix udp trackers being classified as DHT source

ChangeLog

@@ -1,3 +1,7 @@
+=== Deluge 1.1.6 - (In Development) ===
+==== Core ====
+  * Fix udp trackers being classified as DHT source
+
 === Deluge 1.1.5 - (16 March 2009) ===
 ==== Core ====
   * Fix config file saving when no current config file exists

deluge/core/torrent.py

@@ -522,7 +522,7 @@ class Torrent:
             tracker = self.trackers[0]["url"]
 
         if tracker:
-            url = urlparse(tracker)
+            url = urlparse(tracker.replace("udp://", "http://"))
             if hasattr(url, "hostname"):
                 host = (url.hostname or 'DHT')
                 # Check if hostname is an IP address and just return it if that's the case