Specify the generic "unknown" icon as fallback to QIcon::fromTheme()
Review Request #127713 - Created April 22, 2016 and submitted
The default fallback of QIcon::fromTheme() is QIcon(), i.e. a null icon. Set the generic "unknown" icon as fallback to prevent missing icons for filetypes that specify an icon name that doesn't exist.
This also gets rid of "QPixmap::scaled: Pixmap is a null pixmap" warnings in that case.
Open a folder that contains files whose filetype specifies an nonexistent icon name (/dev/ contains a lot of those here).
They show up using the generic "unknown" icon now, see attached screenshots.