Fix incorrect format placeholders
BlockNumber is unsigned int. Fix for commit 14ffaece0fb.
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/c55df7c6eae5a5c6f91cd029fb91913db7f2089c
Modified Files
--------------
contrib/amcheck/verify_gin.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)