e8db1217d4
For servers without UIDPLUS we are inserting additional header just after transformation '\n' -> CRLF was done. addmessageheaders() was written to work with just '\n' as the separator, so X-OfflineIMAP header wasn't preceeded by the CRLF, but just by '\n'. Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>