Dear Maintainer,

I decided to report this little bug that seems  to affect the program since
long time. If I build and install it from source I can see correctly the icon
displayed in the desktop environment menu. If I install the package from the
repositories, the icon is not displayed and the menu only shows the grey
generic program icon in its place (tried with XFCE and MATE).

The only way to have it shown is referencing it with an absolute path,
replacing the "viewnior" notation in the .desktop file with a legit path of one
of its installed icons such as
/usr/share/icons/hicolor/scalable/apps/viewnior.svg

Thanks.