Corretto un bug identico al precedente

diff --git a/RaiTV/ChannelLoader.py b/RaiTV/ChannelLoader.py
index 79e8e47..be4a794 100644
--- a/RaiTV/ChannelLoader.py
+++ b/RaiTV/ChannelLoader.py
@@ -57,7 +57,7 @@ class ChannelList():
                 if url.childNodes is not []:
                     url_array.append(url.childNodes[0].data)

-            if url_array is not []:
+            if len(url_array) is not 0:
                 self.channels.append((name, url_array[0]))