Bug 1056096 - Always prefer higher preview resolution than screen

Its good that you're checking this case where there are not any that are big enough. But, this is buggy. If all of the larger preview sizes have the wrong aspect ratio, then you'll have a non-empty list here but none of the items in the list will match in the loop below because all will have the wrong aspect ratio, and that will get us down into the "this should not happen" loop at the bottom.