<rdar://problem/5326653> - REGRESSION: [WebBackForwardList forwardListCount] might return incorrect result

        No layout test because this is an API issue that can't be tested in DRT or the browser

        * history/BackForwardList.cpp:
        (WebCore::BackForwardList::forwardListCount): If the index is NoCurrentItemIndex, return 0



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@24177 268f45cc-cd09-0410-ab3c-d52691b4dbfc