QFtp does not report error when target of a PUT command cannot be opened

If you attempt to PUT a file via QFtp, and that file cannot be opened, QFtp does not report any sort of error. The session "hangs" until/unless the server gets tired of waiting and times out the session.

(ref QFtpPrivate::_q_startNextCommand(), line 2255, where if c->data.dev->open(...) fails, control simply falls through to line 2273 without raising any sort of error indication)