Bug 8386: Error in duplicate detection message for authorities

Bug 8386: Error in duplicate detection message for authorities

If you create a new authority record and the name already exists in
your database, you get a duplicate warning. This is good, but there is
a small error in the message:

Duplicate record suspected
Is this a duplicate of HASH(0x47fa670)?

This patch corrects the error message to show the title.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Error message correctly shows the name after applying this patch.

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>