There is a copy-paste error from bt_page_items() which got into
bt_page_items_bytea().  A second message in get_raw_page_internal() was
inconsistent with all the other sub-modules.

Author: Ashutosh Sharma
Discussion: https://postgr.es/m/CAE9k0PnZuZ3PVXSyQY91-53E8JKFcaSyknFqqU43r9MabKSYZA@mail.gmail.com