rustdoc: do not include empty default-settings tag in HTML

diff --git a/src/librustdoc/html/templates/page.html b/src/librustdoc/html/templates/page.html
index fddda293b9a86d98cf300cb1ebc672ae80fe1df3..0b49234e9dffef7df6a248fd97b37912138c59bd 100644 (file)
--- a/src/librustdoc/html/templates/page.html
+++ b/src/librustdoc/html/templates/page.html
@@ -24,11 +24,13 @@
     {%- for theme in themes -%}
         <link rel="stylesheet" disabled href="{{page.root_path|safe}}{{theme}}{{page.resource_suffix}}.css"> {#- -#}
     {%- endfor -%}
+    {%- if !layout.default_settings.is_empty() -%}
     <script id="default-settings" {# -#}
       {% for (k, v) in layout.default_settings %}
         data-{{k}}="{{v}}"
       {%- endfor -%}
     ></script> {#- -#}
+    {%- endif -%}
     <script src="{{static_root_path|safe}}{{files.storage_js}}"></script> {#- -#}
     {%- if page.css_class.contains("crate") -%}
     <script defer src="{{page.root_path|safe}}crates{{page.resource_suffix}}.js"></script> {#- -#}