From 777fdb7871afe69547511c432a74b7d54e074db7 Mon Sep 17 00:00:00 2001
From: Michael M Slusarz <slusarz@curecanti.org>
Date: Mon, 3 Aug 2009 12:41:11 -0600
Subject: [PATCH] Guess you can't unset a static member variable - use null
 instead

---
 imp/lib/Search.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/imp/lib/Search.php b/imp/lib/Search.php
index 6e638ce35..3c2225e15 100644
--- a/imp/lib/Search.php
+++ b/imp/lib/Search.php
@@ -74,7 +74,7 @@ class IMP_Search
      *
      * @var array
      */
-    static protected $_vfolder;
+    static protected $_vfolder = null;
 
     /**
      * Constructor.
@@ -280,7 +280,7 @@ class IMP_Search
      */
     protected function _getVFolderList()
     {
-        if (isset(self::$_vfolder)) {
+        if (!is_null(self::$_vfolder)) {
             return self::$_vfolder;
         }
 
@@ -306,7 +306,7 @@ class IMP_Search
     protected function _saveVFolderList($vfolder)
     {
         $GLOBALS['prefs']->setValue('vfolder', serialize($vfolder));
-        unset(self::$_vfolder);
+        self::$_vfolder = null;
     }
 
     /**
-- 
2.11.0