Use proper iterator in loop body

Loop iterates over children to set their state
7967e5e5 follow-up

Change-Id: I425b3204fb3581a22e9ed2b00c7b8c24ed2060a8
Reviewed-on: https://gerrit.libreoffice.org/66333
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sc/source/ui/cctrl/checklistmenu.cxx

@@ -1153,7 +1153,7 @@ void ScCheckListMenuWindow::setAllMemberState(bool bSet)
             SvTreeListEntries& rEntries = (*itr)->GetChildEntries();
             for (auto it = rEntries.begin(), itEnd = rEntries.end(); it != itEnd; ++ it)
             {
-                maChecks->CheckEntry(*itr, bSet);
+                maChecks->CheckEntry(it->get(), bSet);
             }
         }
     }