From 172302e2cf2c08ac02eca57e4147b30f7bf67d7d Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Thu, 2 Jan 2014 09:08:31 +0100
Subject: Small perf. improvement

---
 program/lib/Roundcube/rcube_charset.php | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'program/lib/Roundcube/rcube_charset.php')

diff --git a/program/lib/Roundcube/rcube_charset.php b/program/lib/Roundcube/rcube_charset.php
index 19dbf6cbc..8612e7fca 100644
--- a/program/lib/Roundcube/rcube_charset.php
+++ b/program/lib/Roundcube/rcube_charset.php
@@ -199,10 +199,13 @@ class rcube_charset
                     $iconv_options = '';
                 }
             }
+            else {
+                $iconv_options = false;
+            }
         }
 
         // convert charset using iconv module
-        if ($iconv_options !== null && $from != 'UTF7-IMAP' && $to != 'UTF7-IMAP') {
+        if ($iconv_options !== false && $from != 'UTF7-IMAP' && $to != 'UTF7-IMAP') {
             // throw an exception if iconv reports an illegal character in input
             // it means that input string has been truncated
             set_error_handler(array('rcube_charset', 'error_handler'), E_NOTICE);
@@ -224,10 +227,13 @@ class rcube_charset
                 $mbstring_list = mb_list_encodings();
                 $mbstring_list = array_map('strtoupper', $mbstring_list);
             }
+            else {
+                $mbstring_list = false;
+            }
         }
 
         // convert charset using mbstring module
-        if ($mbstring_list !== null) {
+        if ($mbstring_list !== false) {
             $aliases['WINDOWS-1257'] = 'ISO-8859-13';
             // it happens that mbstring supports ASCII but not US-ASCII
             if (($from == 'US-ASCII' || $to == 'US-ASCII') && !in_array('US-ASCII', $mbstring_list)) {
-- 
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