Always create a thumbnail
Always create a thumbnail

If we pass a width or height of 0 into pixbuf.ScaleSimple
it just returns a null causing f-spot to crash.

This isn't ideal, but for the time being we'll take this
over f-spot crashing.

dkoeb/f-spot,NguyenMatthieu/f-spot,mans0954/f-spot,dkoeb/f-spot,mono/f-spot,dkoeb/f-spot,mans0954/f-spot,Yetangitu/f-spot,mans0954/f-spot,mans0954/f-spot,mono/f-spot,mono/f-spot,mono/f-spot,Yetangitu/f-spot,dkoeb/f-spot,Yetangitu/f-spot,Yetangitu/f-spot,NguyenMatthieu/f-spot,mans0954/f-spot,mono/f-spot,dkoeb/f-spot,NguyenMatthieu/f-spot,mans0954/f-spot,NguyenMatthieu/f-spot,Yetangitu/f-spot,NguyenMatthieu/f-spot,mono/f-spot,dkoeb/f-spot