tdf#107102: fix crash in ScCheckListMenuWindow::CreateAccessible

by checking maEdSearch in addition of !mxAccessible.is()
See http://bugs.documentfoundation.org/attachment.cgi?id=132608 for bt

Change-Id: I2cf7f28daaa6d371d3be0d21bb7f140ff6bb8c8c
Reviewed-on: https://gerrit.libreoffice.org/37110Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sc/source/ui/cctrl/checklistmenu.cxx

@@ -1399,7 +1399,7 @@ void ScCheckListMenuWindow::updateMemberParents( SvTreeListEntry* pLeaf, size_t
 
 Reference<XAccessible> ScCheckListMenuWindow::CreateAccessible()
 {
-    if (!mxAccessible.is())
+    if (!mxAccessible.is() && maEdSearch)
     {
         mxAccessible.set(new ScAccessibleFilterTopWindow(
             GetAccessibleParentWindow()->GetAccessible(), this, getName()));