pgsql: Fix incorrect format placeholders

Fix incorrect format placeholders

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/a450dd7ad4ff80c65f565f1a2bd24be8ff0bf3e3

Modified Files
--------------
src/test/modules/test_bitmapset/test_bitmapset.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)