Fix onSelect CSP error in FF

app/views/repositories/diff.html.erb

@@ -32,8 +32,14 @@ See docs/COPYRIGHT.rdoc for more details.
     <%= form_tag({path: to_path_param(@path)}, method: :get) do %>
       <%= hidden_field_tag('rev', params[:rev]) if params[:rev] %>
       <%= hidden_field_tag('rev_to', params[:rev_to]) if params[:rev_to] %>
-      <%= styled_select_tag 'type', options_for_select([[l(:label_diff_inline), "inline"], [l(:label_diff_side_by_side), "sbs"]], @diff_type), onchange: "if (this.value != '') {this.form.submit()}" %>
-    <% end %>
+      <%= styled_select_tag 'type', options_for_select([[l(:label_diff_inline), "inline"], [l(:label_diff_side_by_side), "sbs"]], @diff_type), id: "repository-diff-type-select" %>
+      <%=
+        content_for(:additional_js_dom_ready) do
+          "jQuery('#repository-diff-type-select').change(function() {
+             if (this.value != '') { this.form.submit() }
+          });".html_safe
+        end
+      %>
   </li>
 <% end %>