pgsql: Fix cross-version upgrades with XMLSERIALIZE(NO INDENT) - Mailing list pgsql-committers

Fix cross-version upgrades with XMLSERIALIZE(NO INDENT)

Dumps from versions older than v16 do not know about NO INDENT in a
XMLSERIALIZE() clause.  This commit adjusts AdjustUpgrade.pm so as NO
INDENT is discarded in the contents of the new dump adjusted for
comparison when the old version is v15 or older.  This should be enough
to make the cross-version upgrade tests pass.

Per report from buildfarm member crake.  Oversight in 984410b92326.

Reviewed-by: Andrew Dunstan <andrew@dunslane.net>
Discussion: https://postgr.es/m/88b183f1-ebf9-4f51-9144-3704380ccae7@dunslane.net
Backpatch-through: 16

Branch
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REL_17_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/310907aaf01053bbc00972a01438997b146b3fdd

Modified Files
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src/test/perl/PostgreSQL/Test/AdjustUpgrade.pm | 6 ++++++
1 file changed, 6 insertions(+)