... as we ignore it anyway because servers don't report the correct size
and proftpd even blatantly returns a 550.
Updates a set of tests accordingly.
Reported-by: awesomenode on github
Fixes#6564Closes#6565
This is a protocol violation but apparently there are legacy proprietary
servers doing this.
Added test 336 and 337 to verify.
Reported-by: Philippe Marguinaud
Closes#4339