Nyaa RSS update (#3793)

* Update keys based on latest RSS template

https://github.com/nyaadevs/nyaa/pull/140

* Flip and add comment

sickbeard/providers/nyaa.py

@@ -80,6 +80,12 @@ class NyaaProvider(TorrentProvider):  # pylint: disable=too-many-instance-attrib
                         if not all([title, download_url]):
                             continue
 
+                        try:
+                            seeders = try_int(curItem['nyaa:seeders'])
+                            leechers = try_int(curItem['nyaa:leechers'])
+                            torrent_size = curItem['nyaa:size']
+                            info_hash = curItem['nyaa:infohash']
+                        except KeyError: # Transition phase because of https://github.com/nyaadevs/nyaa/pull/140
                             seeders = try_int(curItem['seeders'])
                             leechers = try_int(curItem['leechers'])
                             torrent_size = curItem['size']