pgsql: Fix the parameters order for TableAmRoutine.relation_copy_for_cl

Fix the parameters order for TableAmRoutine.relation_copy_for_cluster()

Specify OldTable first, NewTable second as used by
table_relation_copy_for_cluster() and as implemented in
heapam_relation_copy_for_cluster().

Backpatch to PostgreSQL 12, where TableAmRoutine was introduced.

Discussion: https://postgr.es/m/ME3P282MB3166860D4911AE82F92DF7C5B63F2%40ME3P282MB3166.AUSP282.PROD.OUTLOOK.COM
Author: Japin Li
Reviewed-by: Pavel Borisov
Backpatch-through: 12

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/97ce821e3e171ce99fa7c398889ac08432cd0264

Modified Files
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src/include/access/tableam.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)