Open-Xchange: Null pointer deference in call to `mail_get_flags`

run test suite on following input require "vnd.dovecot.testsuite"; require "fileinto"; require "imap4flags"; require "mailbox"; testset "message" text: Subject: Test message. Test message. . ; test "Flag changes between stores" fileinto :create "FolderA"; if not testresultexecute testfail "failed...