pgsql: Use ereport() rather than elog()

Use ereport() rather than elog()

Noah pointed this out before I committed 50f770c3d9, but I
accidentally pushed the old version with elog() anyway. Oops.

Reported-by: Noah Misch <noah@leadboat.com>
Discussion: https://www.postgresql.org/message-id/20250820003756.31.nmisch@google.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/661f821ef0c3078c70096b09dc44fb8fed56f2b4

Modified Files
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src/backend/access/heap/heapam.c   | 6 ++++--
src/backend/access/index/indexam.c | 6 ++++--
2 files changed, 8 insertions(+), 4 deletions(-)