Properly close redis connection(s)

Author: bbedward

db/redis.py

@@ -19,6 +19,7 @@ def instance(cls) -> 'RedisDB':
     @classmethod
     async def close(cls):
         if hasattr(cls, 'redis') and cls.redis is not None:
+            cls.redis.close()
             await cls.redis.wait_closed()
         if cls._instance is not None:
             cls._instance = None
@@ -76,4 +77,4 @@ async def is_paused(self) -> bool:
         """Return True if the bot is paused or not"""
         key = f"{Env.currency_name().lower()}:botpaused"
         redis = await self.get_redis()
-        return (await redis.get(key)) is not None
+        return (await redis.get(key)) is not None