if (ph.getLsn() > -1 && requiresRedo(loggable, page)) {
if (ph.getLsn() != Page.NO_PAGE && requiresRedo(loggable, page)) {
	protected void redoRemoveEmptyPage(RemoveEmptyPageLoggable loggable) {		DOMPage page = getCurrentPage(loggable.pageNum);		DOMFilePageHeader ph = page.getPageHeader();		if (ph.getLsn() > -1 && requiresRedo(loggable, page)) {			removePage(page);        }	}