增加了redis工具库中的方法

sdkredis/redisCommon.go

@@ -231,11 +231,11 @@ func RedisZRangeByScore(conn redis.Conn, key string, startScore string, endScore
 	if limit == "true" {
 		res, err := RedisCommand(conn, "zrangebyscore", key, startScore, endScore, "withscore", "limit", limitStart, limitEnd)
 		reply, _ = redis.Strings(res, nil)
-		return
+		return reply, err
 	}
 	res, err := RedisCommand(conn, "zrangebyscore", key, startScore, endScore, "withscore")
 	reply, _ = redis.Strings(res, nil)
-	return
+	return reply, err
 }
 
 /*
@@ -245,11 +245,11 @@ func RedisZRevRangeByScore(conn redis.Conn, key string, startScore string, endSc
 	if limit == "true" {
 		res, err := RedisCommand(conn, "zrevrangebyscore", key, startScore, endScore, "withscore", "limit", limitStart, limitEnd)
 		reply, _ = redis.Strings(res, nil)
-		return
+		return reply, err
 	}
 	res, err := RedisCommand(conn, "zrevrangebyscore", key, startScore, endScore, "withscore")
 	reply, _ = redis.Strings(res, nil)
-	return
+	return reply, err
 }
 
 /*