Fix possible defect in handling \r\n in scripts (#5685)

CHANGELOG

@@ -23,6 +23,7 @@ RELEASE 1.2.4
 - Add rewrite rule to disable access to /vendor/bin folder in .htaccess (#5630)
 - Fix bug where it was too easy accidentally move a folder when using the subscription checkbox (#5655)
 - Managesieve: Fix parser issue with empty lines between comments (#5657)
+- Managesieve: Fix possible defect in handling \r\n in scripts (#5685)
 
 RELEASE 1.2.3
 -------------

plugins/managesieve/Changelog

@@ -1,4 +1,5 @@
 - Fix handling of scripts with nested rules (#5540)
+- Fix possible defect in handling \r\n in scripts (#5685)
 
 * version 8.6 [2016-04-06]
 -----------------------------------------------------------

plugins/managesieve/lib/Roundcube/rcube_sieve_script.php

@@ -1215,7 +1215,7 @@ class rcube_sieve_script
                         if ($str[$position] == "\n") {
                             $position++;
                         }
-                        else if ($str[$position] == "\r" && $str[$position] == "\n") {
+                        else if ($str[$position] == "\r" && $str[$position + 1] == "\n") {
                             $position += 2;
                         }