added sanity check

git-svn-id: svn://svn.open-ils.org/ILS/trunk@5428 dcc99617-32d9-48b4-a31d-7c20da2025e4

diff --git a/Open-ILS/xul/staff_client/server/patron/ue_ui.js b/Open-ILS/xul/staff_client/server/patron/ue_ui.js
index b1e6b37..396bf7a 100644 (file)
--- a/Open-ILS/xul/staff_client/server/patron/ue_ui.js
+++ b/Open-ILS/xul/staff_client/server/patron/ue_ui.js
@@ -175,6 +175,8 @@ function uEditInsertCat( row, cat, idx ) {
 
        cat.entries().sort(  /* sort the entries by value */
                function( a, b ) { 
+                       if( !a.value() ) return -1;
+                       if( !b.value() ) return 1;
                        if( a.value().toLowerCase() > b.value().toLowerCase()) return 1;
                        if( a.value().toLowerCase() < b.value().toLowerCase()) return -1;
                        return 0;