deleting a user should delete his saved searches, too?

[jenhek]

After deleting a user who has saved searches I end up with an "oops" when trying to view saved searches:

Started GET "/saved/searches" for 134.130.X.Y at 2015-06-24 15:23:54 +0200
Processing by SavedSearchesController#index as HTML
Rendered saved_searches/_saved_search.html.erb (5.8ms)
Rendered saved_searches/index.html.erb within layouts/application (10.2ms)
Completed 500 Internal Server Error in 29ms

ActionView::Template::Error (undefined method id' for nil:NilClass): 1: <% can_edit = (current_user.id == saved_search.user.id) %> 2: <tr data-id="<%= saved_search.id %>"> 3: 4: <% if can_edit %> app/views/saved_searches/_saved_search.html.erb:1:in_app_views_saved_searches__saved_search_html_erb__2937626048927797939_52591920'
app/views/saved_searches/index.html.erb:21:in `_app_views_saved_searches_index_html_erb__2484555833295938071_52488860'