Protect against empty lists of linked bib searches

Instead of returning undef when passed an empty list of bibs, always
return an array from
open-ils.cat.authority.records.count_linked_bibs
Apart from consistency, this prevents JS errors in the Manage
Authorities UI.

Signed-off-by: berick <berick@esilibrary.com>

diff --git a/Open-ILS/src/perlmods/lib/OpenILS/Application/Cat/Authority.pm b/Open-ILS/src/perlmods/lib/OpenILS/Application/Cat/Authority.pm
index 1995edf..9e60557 100644 (file)
--- a/Open-ILS/src/perlmods/lib/OpenILS/Application/Cat/Authority.pm
+++ b/Open-ILS/src/perlmods/lib/OpenILS/Application/Cat/Authority.pm
@@ -194,7 +194,7 @@ sub count_linked_bibs {
 
     my $editor = new_editor();
 
-    my $link_count;
+    my $link_count = [];
     my @clean_records;
     for my $auth ( @$records ) {
         # Protection against SQL injection? Might be overkill.