Fix untagged COPYUID responses handling - again (#5982)

CHANGELOG

@@ -4,6 +4,7 @@ CHANGELOG Roundcube Webmail
 - Fix a couple of warnings on PHP 7.2
 - Fix broken long filenames when using imap4d server - workaround server bug (#6048)
 - Fix so temp_dir misconfiguration prints an error to the log (#6045)
+- Fix untagged COPYUID responses handling - again (#5982)
 
 RELEASE 1.3.3
 -------------

program/lib/Roundcube/rcube_imap_generic.php

@@ -3733,7 +3733,7 @@ class rcube_imap_generic
             }
 
             // parse untagged response for [COPYUID 1204196876 3456:3457 123:124] (RFC6851)
-            if ($line && $command == 'UID MOVE' && substr_compare($line, '* OK', 0, 4, true)) {
+            if ($line && $command == 'UID MOVE') {
                 if (preg_match("/^\* OK \[COPYUID [0-9]+ ([0-9,:]+) ([0-9,:]+)\]/i", $line, $m)) {
                     $this->data['COPYUID'] = array($m[1], $m[2]);
                 }