replace raise StopIteration, PEP-479

[ci skip]

steam/client/builtins/leaderboards.py

@@ -179,7 +179,7 @@ class SteamLeaderboard(object):
             with ConstantRateLimit(times, seconds, sleep_func=self._steam.sleep) as r:
                 for entries in chunks(self, chunk_size):
                     if not entries:
-                        raise StopIteration
+                        return
                     for entry in entries:
                         yield entry
                     r.wait()

steam/master_server.py

@@ -116,7 +116,7 @@ def query(filter_text=r'\napp\500', region=MSRegion.World, master=MSServer.Sourc
 
             # check if we've reach the end of the list
             if ip == '0.0.0.0' and port == 0:
-                raise StopIteration
+                return
 
             yield ip, port