- Siegfried Gyuricsko found out that the curl manual said --retry would retry

on FTP errors in the transient 5xx range. Transient FTP errors are in the
  4xx range. The code itself only tried on 5xx errors that occured _at login_.
  Now the retry code retries on all FTP transfer failures that ended with a
  4xx response.

  (http://curl.haxx.se/bug/view.cgi?id=2911279)

RELEASE-NOTES

@@ -31,6 +31,7 @@ This release includes the following bugfixes:
  o TFTP BLKSIZE
  o Expect: 100-continue handling when set by the application
  o multi interface with OpenSSL read already freed memory when closing down
+ o --retry didn't do right for FTP transient errors
 
 This release includes the following known bugs:
 
@@ -42,6 +43,6 @@ advice from friends like these:
  Yang Tse, Kamil Dudka, Christian Schmitz, Constantine Sapuntzakis,
  Marco Maggi, Camille Moncelier, Claes Jakobsson, Kevin Baughman,
  Marc Kleine-Budde, Jad Chamcham, Bjorn Augustsson, David Byron,
- Markus Koetter, Chad Monroe, Martin Storsjo
+ Markus Koetter, Chad Monroe, Martin Storsjo, Siegfried Gyuricsko
 
         Thanks! (and sorry if I forgot to mention someone)