Empty item in the breadcrumb trail

The first item that facetapi adds to the breadcrumb trail is supposed to have the title of the current page, and the subsequent items will be applied facets. However, sometimes this results in an empty breadcrumb item because the menu router item for the current page doesn't have a title. The patch I'm about to submit just adds a check to make sure the title isn't empty... (though perhaps I should really be looking at why it happens that items in the menu router table don't have titles or whether there's a better way to get the title for the breadcrumb item, but this will have to do for now :-/ The pages in question are views pages, so nothing very edge-casey).