Merge pull request #143 from dreulavelle/bug/content/update_None_items

Avoid [None] if empty content service

backend/program/content/mdblist.py

@@ -55,7 +55,7 @@ def run(self):
                         items += self._get_items_from_list(
                             list_id, self.settings.api_key
                         )
-                new_items = [item for item in items if item not in self.media_items]
+                new_items = [item for item in items if item not in self.media_items] or []
                 container = self.updater.create_items(new_items)
                 for item in container:
                     item.set("requested_by", "Mdblist")

backend/program/content/overseerr.py

@@ -51,7 +51,7 @@ def run(self):
         """Fetch media from overseerr and add them to media_items attribute
         if they are not already there"""
         items = self._get_items_from_overseerr(10000)
-        new_items = [item for item in items if item not in self.media_items]
+        new_items = [item for item in items if item not in self.media_items] or []
         container = self.updater.create_items(new_items)
         for item in container:
             item.set("requested_by", "Overseerr")

backend/program/content/plex_watchlist.py

@@ -51,7 +51,7 @@ def run(self):
         """Fetch media from Plex Watchlist and add them to media_items attribute
         if they are not already there"""
         items = self._create_unique_list()
-        new_items = [item for item in items if item not in self.media_items]
+        new_items = [item for item in items if item not in self.media_items] or []
         container = self.updater.create_items(new_items)
         for item in container:
             item.set("requested_by", "Plex Watchlist")