Bug#790274: python-pyftpdlib: FTBFS: Failure in test_on_incomplete_file_sent

[W. Martin Borgert]

fixed 790274 1.4.0-1
thanks

Presumably the bug is not present in >= 1.4.0-1 anymore.
Probably the bug needs fixing in Jessie.
Btw, I will try to backport 1.5.1-n to Jessie, because I need py3 support.