Fullscreen doesn't advance when image deleted

[foxyshadis]

Now this is a behavior I'd have never thought was related. The problem is that under a very specific condition, xnview will not advance to the next image when you delete the current one in fullscreen, even when "go to next image when deleting current" is checked. That specific condition is that [Start]->MaxFileSize1 is less than the size of the deleted image (not the next). This corresponds to "show in preview/files smaller than...", set to 1k to see it. This only applies if the file type is checked in the list of checkboxes under it, for instance, unchecking images will return to the old behavior.