pgsql: Fix incorrect format placeholders

Fix incorrect format placeholders

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/5936afe1ee83aea739163edf30349b63bc620c0a

Modified Files
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src/backend/storage/ipc/shmem.c | 4 ++--
src/bin/pg_waldump/archive_waldump.c | 4 ++--
src/bin/pg_waldump/pg_waldump.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)