fix case in class name

libs/sysplugins/smarty_data.php

@@ -57,7 +57,7 @@ class Smarty_Data extends Smarty_Internal_Data
         } elseif (is_array($_parent)) {
             // set up variable values
             foreach ($_parent as $_key => $_val) {
-                $this->tpl_vars[$_key] = new Smarty_variable($_val);
+                $this->tpl_vars[$_key] = new Smarty_Variable($_val);
             }
         } elseif ($_parent != null) {
             throw new SmartyException("Wrong type for template variables");