D22528: KIO FTP: Fix file copy hanging when copying to existing file

[Nathaniel Graham]

ngraham added a reviewer: cfeck.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D22528

To: ZaWertun, sitter, dfaure, cfeck
Cc: kde-frameworks-devel, LeGast00n, sbergeron, michaelh, ngraham, bruns