BugFix - get_members raised AttributeError because no clan found in cache.

- Bit of a bandaid solution provided, function might need a refactor later on.

Author: mathsman5133

coc/client.py

@@ -397,7 +397,8 @@ async def get_members(
                 if fetch is False:
                     return
             else:
-                return clan.members
+                if clan:
+                    return clan.members
 
         data = await self.http.get_clan(clan_tag)
         clan = SearchClan(data=data, http=self.http)