pgsql: revert: Remove meaningless assignments in nbtree code

revert: Remove meaningless assignments in nbtree code

Reverts commit 05684c8255.

Reported-by: Tom Lane

Discussion: /messages/by-id/404.1576770942@sss.pgh.pa.us

Backpatch-through: master

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/b93e9a5c94b4c89932a637798bd560971fe790d7

Modified Files
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src/backend/access/nbtree/nbtpage.c | 1 +
src/backend/access/nbtree/nbtxlog.c | 2 ++
2 files changed, 3 insertions(+)