If a patron edit his/her details a second time, we need to delete the
first ones to avoid a "duplicate entry for key PRIMARY" error.
Test plan:
Log in at the OPAC
Edit your details
Edit them again
=> Without this patch, Koha will crash
=> With the patch applied, everything should work as expected
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
