RT-123495 Fix failing tests in t/72pg.t

[mrmuskrat]

This addresses https://rt.cpan.org/Ticket/Display.html?id=123494 by adding the expected warning in the call to warnings_like on line 512.

[ribasushi]

Hi @mrmuskrat, sorry for the delay.

As you noted in the corresponding RT, the patch would be problematic on older versions of Postgres ( and DBIC explicitly does not define a lower bound for supported versions ).

The problem you observed in RT-123495 does not affect he maintenance branch ( which is going to see at least one more release before things move onward ). There is a more in-depth fix required on the current codebase in master to completely remove the incorrect use of Scope::Guard, which ( as a side-effect ) will remove this warning as well on all versions of Postgres.

Therefore this PR will be closed as "won't apply", but the corresponding RT will remain open to ensure this doesn't slip.

Thanks for testing this!