fixed warning. isset doesn't work with string offsets > strlen

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@5162 7612ce4b-ef26-0410-bec9-ea0150e637f0

diff --git a/class/mime/Rfc822Header.class.php b/class/mime/Rfc822Header.class.php
index 0b35277aab2d6bfb3f4349623eb69e088a759817..07102c415944d7caade849d4c5bef8b7495a028f 100644 (file)
--- a/class/mime/Rfc822Header.class.php
+++ b/class/mime/Rfc822Header.class.php
@@ -293,7 +293,7 @@ class Rfc822Header {
                 // check the next token in case comments appear in the middle of email addresses
                 $prevToken = end($aTokens);
                 if (!in_array($prevToken,$aSpecials,true)) {
-                    if (isset($address{$i+1}) && !in_array($address{$i+1},$aSpecials,true)) {
+                    if ($i+1<strlen($address) && !in_array($address{$i+1},$aSpecials,true)) {
                         $iEnd = strpos($address,' ',$i+1);
                         if ($iEnd) {
                             $sNextToken = trim(substr($address,$i+1,$iEnd - $i -1));