Enable reply/reply-all/forward buttons also in preview frame of message/rfc822

Aleksander Machniak

2016-03-28 46f7b7096450939fe03c95aa81ce06ae4bfca89d

 program/js/treelist.js

@@ -943,7 +943,7 @@
    for (var id in indexbyid) {
      li = id2dom(id);
      item = li.children().first().get(0);
      if (height = item.offsetHeight) {
      if (item && (height = item.offsetHeight)) {
        pos = $(item).offset();
        pos.top += list_scroll_top;
        item_coords[id] = {