Fixed a segfault when running a PCell definition macro (segfault happened in update of library view because the library was gone). Fixed a dialog title.

src/laybasic/laybasic/layLibrariesView.cc

@@ -588,10 +588,6 @@ LibrariesView::do_update_content (int lib_index)
       m_force_close [i] = true;
     }
 
-    if (m_needs_update [i]) {
-      mp_cell_lists [i]->doItemsLayout ();   //  triggers a redraw
-    }
-
     m_libraries [i].reset (libraries [i]);
 
   }
@@ -715,6 +711,8 @@ LibrariesView::do_update_content (int lib_index)
 
       m_needs_update [i] = false;
 
+      mp_cell_lists [i]->doItemsLayout ();   //  triggers a redraw -> the model might need this
+
     }
 
     mp_cell_list_headers [i]->setVisible (split_mode && m_libraries.size () > 1);