Fix random playlist death bug

lib/database/channels.js

@@ -291,7 +291,7 @@ module.exports = {
             // Note that before this line, chan.name might have a different capitalization
             // than the database has stored.  Update accordingly.
             chan.name = res[0].name;
-            chan.canonical_name = chan.name.toLowerCase();
+            chan.uniqueName = chan.name.toLowerCase();
             chan.registered = true;
             chan.logger.log("[init] Loaded channel from database");
             callback(null, true);

lib/playlist.js

@@ -36,7 +36,7 @@ PlaylistItem.prototype.pack = function() {
 }
 
 function Playlist(chan) {
-    var name = chan.canonical_name;
+    var name = chan.uniqueName;
     if(name in AllPlaylists && AllPlaylists[name]) {
         var pl = AllPlaylists[name];
         if(!pl.dead)