Fix IMAP SETMETADATA parameters quoting (#1489231)

Conflicts:

	CHANGELOG

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix IMAP SETMETADATA parameters quoting (#1489231)
 - Fix "could not load message" error on valid empty message body (#1489228)
 - Fix handling of message/rfc822 attachments on message forward and edit (#1489214)
 - Fix parsing of square bracket characters in IMAP response strings (#1489223)

program/lib/Roundcube/rcube_imap_generic.php

@@ -2988,7 +2988,7 @@ class rcube_imap_generic
         }
 
         foreach ($entries as $name => $value) {
-            $entries[$name] = $this->escape($name) . ' ' . $this->escape($value);
+            $entries[$name] = $this->escape($name) . ' ' . $this->escape($value, true);
         }
 
         $entries = implode(' ', $entries);