CONJ-896 Fix regression in pooled connections

[jaikiran]

Hello @rusher, I think the commit here should address the issue noted in https://jira.mariadb.org/browse/CONJ-896.

[jaikiran]

The travis job failures don't look related to this change. Logs say:

CONNECTOR_TEST_SECRET_KEY env not set

{"ipv6":true,"fixed-cidr-v6":"2001:db8:1::/64"}

private environment variable CONNECTOR_TEST_SECRET_KEY must be provided for skysql-ha

CONNECTOR_TEST_SECRET_KEY env not set

{"ipv6":true,"fixed-cidr-v6":"2001:db8:1::/64"}

private environment variable CONNECTOR_TEST_SECRET_KEY must be provided for skysql

[rusher]

Thanks for your contribution.
The problems concerning test failing have been corrected with 06852c1 (that was affecting PR only)

[jaikiran]

Thank you for reviewing this and merging @rusher