pgsql: Drop global objects after completed test

Drop global objects after completed test

Project policy is to not leave global objects behind after a regress
test run. This was found as a result of the development of a patch
to make pg_regress detect such leftovers automatically, which in the
end was withdrawn due to issues with parallel runs.

Discussion: https://postgr.es/m/E1phvk7-000VAH-7k@gemulon.postgresql.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/936e3fa3787a51397280c1081587586e83c20399

Modified Files
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src/test/modules/test_pg_dump/expected/test_pg_dump.out | 2 ++
src/test/modules/test_pg_dump/sql/test_pg_dump.sql | 3 +++
2 files changed, 5 insertions(+)