- Don't log errors when charset conversion fails

program/include/main.inc

@@ -142,10 +142,8 @@ function rcmail_temp_gc()
   $tmp = unslashify($rcmail->config->get('temp_dir'));
   $expire = mktime() - 172800;  // expire in 48 hours
 
-  if ($dir = opendir($tmp))
-    {
-    while (($fname = readdir($dir)) !== false)
-      {
+  if ($dir = opendir($tmp)) {
+    while (($fname = readdir($dir)) !== false) {
       if ($fname{0} == '.')
         continue;
 
@@ -205,7 +203,6 @@ function rcube_charset_convert($str, $from, $to=NULL)
   static $iconv_options = null;
   static $mbstring_loaded = null;
   static $mbstring_list = null;
-  static $convert_warning = false;
   static $conv = null;
 
   $error = false;
@@ -310,19 +307,6 @@ function rcube_charset_convert($str, $from, $to=NULL)
     $error = true;
   }
 
-  // report error
-  if ($error && !$convert_warning) {
-    raise_error(array(
-      'code' => 500,
-      'type' => 'php',
-      'file' => __FILE__,
-      'line' => __LINE__,
-      'message' => "Could not convert string from $from to $to. Make sure iconv/mbstring is installed or lib/utf8.class is available."
-      ), true, false);
-
-    $convert_warning = true;
-  }
-
   // return UTF-8 or original string
   return $str;
 }