Fix decoding error in ietf-drums-parse-address

* lisp/mail/ietf-drums.el (ietf-drums-parse-address): Don't try to
decode the name if there is no name (bug#53716).

diff --git a/lisp/mail/ietf-drums.el b/lisp/mail/ietf-drums.el
index 4a0795918906f8cb2535bb6ddcb8d6a445fcd4ea..952707226f58dbe739619364dfdb229a4c4f9709 100644 (file)
--- a/lisp/mail/ietf-drums.el
+++ b/lisp/mail/ietf-drums.el
@@ -240,7 +240,7 @@ If DECODE, the DISPLAY-NAME will have RFC2047 decoding performed
            (cons
             (mapconcat #'identity (nreverse display-name) "")
             (ietf-drums-get-comment string)))
-       (cons mailbox (if decode
+       (cons mailbox (if (and decode display-string)
                           (rfc2047-decode-string display-string)
                         display-string))))))