Merge pull request #176 from shadlaws/fix_2031

#2031 - Add class_exists() before method_exists() if class existence is unknown.

1 files changed, 1 insertions, 1 deletions

diff --git a/modules/gallery/libraries/SafeString.php b/modules/gallery/libraries/SafeString.php
index 31e9d31b..179cbd41 100644
--- a/modules/gallery/libraries/SafeString.php
+++ b/modules/gallery/libraries/SafeString.php
@@ -153,7 +153,7 @@ class SafeString_Core {
    * Purify the string, removing any potentially malicious or unsafe HTML / JavaScript.
    */
   private static function _purify_for_html($dirty_html) {
-    if (method_exists("purifier", "purify")) {
+    if (class_exists("purifier") && method_exists("purifier", "purify")) {
       return purifier::purify($dirty_html);
     } else {
       return self::_escape_for_html($dirty_html);