Fixed: Handling of poorly formed items when parsing results from indexer

Co-Authored-By: Mark McDowall <markus101@users.noreply.github.com>

src/NzbDrone.Core/Indexers/RssParser.cs

@@ -259,12 +259,25 @@ namespace NzbDrone.Core.Indexers
         protected virtual RssEnclosure[] GetEnclosures(XElement item)
         {
             var enclosures = item.Elements("enclosure")
-                                 .Select(v => new RssEnclosure
+                                 .Select(v =>
+                                 {
+                                     try
+                                     {
+                                         return new RssEnclosure
                                          {
                                              Url = v.Attribute("url").Value,
                                              Type = v.Attribute("type").Value,
                                              Length = (long)v.Attribute("length")
+                                         };
+                                     }
+                                     catch (Exception e)
+                                     {
+                                         _logger.Warn(e, "Failed to get enclosure for: {0}", item.Title());
+                                     }
+
+                                     return null;
                                  })
+                                 .Where(v => v != null)
                                  .ToArray();
 
             return enclosures;