Localization Manager (l10nmgr)

$_EXTCONF in the ext_localconf.php is serialized, it is needed to unserialize it before the check

Bug:

if ($_EXTCONF['enable_stat_hook']) {
        $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['GLOBAL']['recStatInfoHooks']['tx_l10nmgr'] = 'EXT:l10nmgr/class.l10nmgr_tcemain_hook.php:&tx_l10nmgr_tcemain_hook->stat';
}

Fix:

$_EXTCONF_ARRAY = unserialize($_EXTCONF);
if ($_EXTCONF_ARRAY['enable_stat_hook']) {
        $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['GLOBAL']['recStatInfoHooks']['tx_l10nmgr'] = 'EXT:l10nmgr/class.l10nmgr_tcemain_hook.php:&tx_l10nmgr_tcemain_hook->stat';
}