Revert/optimize some changes from ed944a3c70a0bad158cd5a6ca5ce1f2e717aff5d
diff --git a/system/core/Utf8.php b/system/core/Utf8.php
index 2b5a1f5..0a7ec50 100644
--- a/system/core/Utf8.php
+++ b/system/core/Utf8.php
@@ -54,7 +54,7 @@
if (
@preg_match('/./u', 'é') === 1 // PCRE must support UTF-8
&& function_exists('iconv') // iconv must be installed
- && @ini_get('mbstring.func_overload') !== 1 // Multibyte string function overloading cannot be enabled
+ && (bool) @ini_get('mbstring.func_overload') !== TRUE // Multibyte string function overloading cannot be enabled
&& $CFG->item('charset') === 'UTF-8' // Application charset must be UTF-8
)
{