LP#2071656 fix for patron self registration form when related library settings are false

Release-note; Fixes issue that caused the public catalog patron
self-registration form to not honor library settings used to
control the visibility of some fields such as the second given
name

Signed-off-by: Llewellyn Marshall <[email protected]>
Signed-off-by: Gina Monti <[email protected]>
Signed-off-by: Galen Charlton <[email protected]>

Author: lbmarshallv1994

Open-ILS/src/perlmods/lib/OpenILS/WWW/EGCatLoader/Register.pm

@@ -211,7 +211,7 @@ sub collect_register_validation_settings {
         next unless $set =~ /regex$|show$|require$|example$/;
 
         my $val = $ctx->{get_org_setting}->($ctx_org, $set);
-        next unless $val; # no configured org setting
+        next unless defined($val); # no configured org setting
 
         # extract the field class, name, and 
         # setting type from the setting name