Add a check to ensure that we have online channels

cogs/picarto.py

@@ -35,6 +35,8 @@ class Picarto:
         # Channel is the name we are checking against that
         # This creates a list of all users that match this channel name (should only ever be 1)
         # And returns True as long as it is more than 0
+        if not self.channels:
+            return False
         channel = re.search("(?<=picarto.tv/)(.*)", channel).group(1)
         matches = [stream for stream in self.online_channels if stream['channel_name'].lower() == channel.lower()]
         return len(matches) > 0