iOS: fix iOS cannot loadmore when list's itemCount is 0

doric-iOS/Pod/Classes/Shader/DoricListNode.m

@@ -171,7 +171,6 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
             + (self.hasFooter ? 1 : 0)) {
         reuseId = @"doricFooterCell";
     } else if (self.loadMore
-            && position > 0
             && position == self.itemCount + (self.hasHeader ? 1 : 0)
             && self.onLoadMoreFuncId) {
         reuseId = @"doricLoadMoreCell";