Decode EMailRequest::priv::uri_base URI-escaped letters

It's for cases when message UID contains letters which are supposed
to be encoded, like "<>" in NNTP message UIDs. Without the decode
the message preview is left empty and only console shows a runtime
critical warning:
   handle_mail_request: assertion `part_list != NULL' failed

0 files changed, 0 insertions, 0 deletions