C++ SDK can not return error code of PartInUse and PartWaiting correctly

[TszKitLo40]

Expected behavior

Tell us what should happen
If the index partitions are empty and the used partitions are empty, err_code::kErrAllPartWaiting should be returned.
If the index partitions are empty and the used partitions are not empty, err_code::kErrAllPartWaiting should be returned.

Actual behavior

Tell us what happens instead

Steps to reproduce

How can we reproduce the issue

System configuration

InLong version: 0.11.0

[gosonzhang]

Ok, I get it, thanks @TszKitLo40