Ensure WebApp.get_icon_pixbuf() size > 0
Ensure WebApp.get_icon_pixbuf() size > 0

It really doesn't make sense to create a pixbuf with size <= 0!

Signed-off-by: Jiří Janoušek <2a48236b6dcae98c8c0e90f4673742773ee17d91@gmail.com>

tiliado/nuvolaruntime,tiliado/nuvolaruntime,tiliado/nuvolaruntime,tiliado/nuvolaruntime