InfluxQLQuery show series has no result end parse

[bugmenoway]

Steps to reproduce: List the minimal actions needed to reproduce the behavior.

1. add some serie to influxdb
2. use InfluxQLQuery execute sql "show series on db"

Expected behavior: The return InfluxQLQueryResult should include all series in infludb

Actual behavior: InfluxQLQueryResult not null ,but has no values in Series. Read the code，the problem lies in class InfluxQLQueryApiImpl line 129

Specifications:

• Client Version: 6.10.0
• InfluxDB Version: v2.6.1
• JDK Version: jdk1.8.0_271
• Platform: Window7 x86

[bugmenoway]

I found same issue on #684,the handling plan has been adopted.But this change #704 was not applied in version 6. x.