fixed rolesactive notice during installation; merged from MOODLE_17_STABLE

diff --git a/admin/user.php b/admin/user.php
index 043a928e1c1365f089577f7b00863b08c1075e62..ff014601214726cdbb7b219724514daa436ff8de 100644 (file)
--- a/admin/user.php
+++ b/admin/user.php
@@ -19,7 +19,7 @@
         redirect('index.php');
     }
 
-    if (!$CFG->rolesactive) {   // No admin user yet.
+    if (empty($CFG->rolesactive)) {   // No admin user yet.
 
         $user = new object();
         $user->firstname    = get_string('admin');