[patch] klineedit: use isEmpty()

[David Faure]

On Thursday 03 April 2008, Jarosław Staniek wrote:
> 
> for review: no idea why input.isNull() was used, perhaps there's a reason?

Then why change it?

-- 
David Faure, faure at kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).