Patch to allow editing document shepherd.

 - Legacy-Id: 18912

Author: rjsparks

ietf/static/ietf/js/select2-field.js

@@ -38,7 +38,7 @@ function setupSelect2Field(e) {
             element = $(element);  // jquerify
 
             // The original data set will contain any values looked up via ajax
-            var data = element.select2('data');
+            var data = element.select2('data') | [] ;
             var data_map = {};
 
             // map id to its data representation