Fix warning about .BaseFileName on zero object

layouts/_default/baseof.html

@@ -14,6 +14,10 @@
 	{{ with .Site.Params.author }}<meta name="author" content="{{ . }}">{{ end }}
 	{{ $style := resources.Get "style/main.sass" | resources.ToCSS }}
 	<link rel="stylesheet" href="{{ $style.RelPermalink }}">
+
+	{{ with .Site.Params.comments.webmention }}<link rel="webmention" href="{{ . }}" />{{ end }}
+	{{ with .Site.Params.comments.pingback }}<link rel="pingback" href="{{ . }}" />{{ end }}
+
 	{{ if .Site.Params.comments.cactus }}<link rel="stylesheet" href="https://latest.cactus.chat/style.css" type="text/css">{{ end }}
 	{{ with .OutputFormats.Get "RSS" -}}
 		{{ printf `<link rel="%s" type="%s" href="%s" title="%s">` .Rel .MediaType.Type .RelPermalink $.Site.Title | safeHTML }}

layouts/partials/scripts.html

@@ -1,17 +1,19 @@
 <script type="text/javascript" src="/js/navbar.js"></script>
 
-{{ $page_id := .File.BaseFileName }}
-{{ if .Site.Params.comments.webmention }}
-    {{ $webmention_js := resources.Get "js/webmention.js" | minify }}
-    <script src="{{ $webmention_js.RelPermalink }}"
-            data-page-url="{{ .Permalink }}"
-            async></script>
-{{ end }}
-{{ with .Site.Params.comments.cactus }}
-    <script type="text/javascript" src="https://latest.cactus.chat/cactus.js"
-            data-default-homeserver-url="https://matrix.cactus.chat:8448"
-            data-server-name="cactus.chat"
-            data-site-name="{{ . }}"
-            data-node="#cactus-comments"
-            data-comment-section-id="{{ $page_id }}"></script>
+{{ if .File }}
+    {{ $page_id := .File.BaseFileName }}
+    {{ if .Site.Params.comments.webmention }}
+        {{ $webmention_js := resources.Get "js/webmention.js" | minify }}
+        <script src="{{ $webmention_js.RelPermalink }}"
+                data-page-url="{{ .Permalink }}"
+                async></script>
+    {{ end }}
+    {{ with .Site.Params.comments.cactus }}
+        <script type="text/javascript" src="https://latest.cactus.chat/cactus.js"
+                data-default-homeserver-url="https://matrix.cactus.chat:8448"
+                data-server-name="cactus.chat"
+                data-site-name="{{ . }}"
+                data-node="#cactus-comments"
+                data-comment-section-id="{{ $page_id }}"></script>
+    {{ end }}
 {{ end }}