pgsql: Add const qualifiers to XLogRegister*() functions

Add const qualifiers to XLogRegister*() functions

Add const qualifiers to XLogRegisterData() and XLogRegisterBufData().
Several unconstify() calls can be removed.

Reviewed-by: Aleksander Alekseev <aleksander(at)timescale(dot)com>
Discussion: https://www.postgresql.org/message-id/dd889784-9ce7-436a-b4f1-52e4a5e577bd@eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/2b5f57977f6d16796121d796835c48e4241b4da1

Modified Files
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src/backend/access/brin/brin_pageops.c | 4 ++--
src/backend/access/transam/README | 4 ++--
src/backend/access/transam/xact.c | 4 ++--
src/backend/access/transam/xlog.c | 2 +-
src/backend/access/transam/xloginsert.c | 22 +++++++++++-----------
src/backend/replication/logical/message.c | 4 ++--
src/include/access/xlog_internal.h | 2 +-
src/include/access/xloginsert.h | 6 +++---
src/include/storage/bufpage.h | 4 ++--
9 files changed, 26 insertions(+), 26 deletions(-)