Browse normalization timing fix

When indexing browse entries, we need to normalize the value we want to use
before we go looking for it in the table, for uniqueness.  We do in master,
we need to in 2.4 (and before) as well.

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Ben Shum <bshum@biblio.org>
Stamping upgrade for browse normalization timing fix

Signed-off-by: Ben Shum <bshum@biblio.org>