Adjust perl style.

Robert Haas <rhaas@postgresql.org>

Commit: 7a1527c02c147a4107490662cb1872524c54a8ae
Author: Robert Haas <rhaas@postgresql.org>
Date: 2021-03-12T19:55:40Z
Releases: 14.0
Adjust perl style.

Per buildfarm member crake.

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