cid#704596 dereference after null check

this code dates back to the first commit, if the null check was
valid the dereference should have triggered a bug by now.

Change-Id: I7746bd26b6760dec4db522938e40a323be9ae4d8

cui/source/customize/cfg.cxx

@@ -1052,10 +1052,7 @@ void
 MenuSaveInData::SetEntries( SvxEntries* pNewEntries )
 {
     // delete old menu hierarchy first
-    if ( pRootEntry != NULL )
-    {
-        delete pRootEntry->GetEntries();
-    }
+    delete pRootEntry->GetEntries();
 
     // now set new menu hierarchy
     pRootEntry->SetEntries( pNewEntries );