amcheck: Sanitize metapage's allequalimage field.
This will be helpful if it ever proves necessary to revoke an opclass's
support for deduplication.
Backpatch: 13-, where nbtree deduplication was introduced.
Branch
------
REL_13_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/be9bdab983cfc44db1d7f8c06df7d7a7cbcb8128
Modified Files
--------------
contrib/amcheck/verify_nbtree.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)