fixed previous merge, done the same change to other occurences

src/Symfony/Component/Console/Application.php

@@ -718,13 +718,16 @@ class Application
      */
     public function renderException($e, $output)
     {
-        $strlen = function ($string)
-        {
+        $strlen = function ($string) {
+            if (!function_exists('mb_strlen')) {
+                return strlen($string);
+            }
+
             if (false === $encoding = mb_detect_encoding($string)) {
                 return strlen($string);
             }
 
-            return function_exists('mb_strlen') ? mb_strlen($string, $encoding) : strlen($string);
+            return mb_strlen($string, $encoding);
         };
 
         do {

src/Symfony/Component/Console/Helper/FormatterHelper.php

@@ -74,7 +74,15 @@ class FormatterHelper extends Helper
      */
     private function strlen($string)
     {
-        return function_exists('mb_strlen') ? mb_strlen($string, mb_detect_encoding($string)) : strlen($string);
+        if (!function_exists('mb_strlen')) {
+            return strlen($string);
+        }
+
+        if (false === $encoding = mb_detect_encoding($string)) {
+            return strlen($string);
+        }
+
+        return mb_strlen($string, $encoding);
     }
 
     /**