security update for entity_reference

sites/all/modules/contrib/fields/entityreference/entityreference.feeds.inc

@@ -125,10 +125,15 @@ function entityreference_feeds_set_target($source, $entity, $target, $value) {
           break;
         case 'label':
           $options = $handler->getReferencableEntities($value, '=');
-          $options = reset($options);
-          $etids = array_keys($options);
-          // Use the first matching entity.
-          $entity_id = reset($etids);
+          if ($options) {
+            $options = reset($options);
+            $etids = array_keys($options);
+            // Use the first matching entity.
+            $entity_id = reset($etids);
+          }
+          else {
+            $entity_id = NULL;
+          }
           break;
       }
       /*