Fix bug where vacation rule was saved to wrong script if managesieve_kolab_master=true

plugins/managesieve/Changelog

@@ -1,5 +1,6 @@
 - Fix bug where actions without if/elseif/else in sieve scripts were skipped
 - Support "not allof" test as a negation of all sub-tests
+- Fix bug where vacation rule was saved to wrong script if managesieve_kolab_master=true
 
 * version 8.1 [2014-12-09]
 -----------------------------------------------------------

plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php

@@ -227,7 +227,7 @@ class rcube_sieve_engine
 
         if ($script_name === null || $script_name === '') {
             // get (first) active script
-            if (!empty($this->active[0])) {
+            if (!empty($this->active)) {
                $script_name = $this->active[0];
             }
             else if ($list) {
@@ -2078,7 +2078,6 @@ class rcube_sieve_engine
 
         // Handle active script(s) and list of scripts according to Kolab's KEP:14
         if ($this->rc->config->get('managesieve_kolab_master')) {
-
             // Skip protected names
             foreach ((array)$this->list as $idx => $name) {
                 $_name = strtoupper($name);
@@ -2140,6 +2139,11 @@ class rcube_sieve_engine
             }
         }
 
+        // reindex
+        if (!empty($this->list)) {
+            $this->list = array_values($this->list);
+        }
+
         return $this->list;
     }