Extension Manager: add missing security token

Author: splitbrain

lib/plugins/extension/GuiAdmin.php

@@ -199,6 +199,7 @@ protected function searchResults($q)
 
         $html = '<div id="extension__list">';
         $html .= '<form action="' . $this->tabURL('search') . '" method="post">';
+        $html .= formSecurityToken(false);
 
         try {
             $extensions = $repo->searchExtensions($q);