doc: mknews: fix warnings when generating NEWS.html

We need these values in the PSGI $env to generate the cache key,
even if we're not linkifying anything.

Fixes: 48cbe0c3 (www: linkify inbox addresses in To/Cc headers, 2024-01-09)

1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/mknews.perl b/Documentation/mknews.perl
index 68866f44..001ad310 100755
--- a/Documentation/mknews.perl
+++ b/Documentation/mknews.perl
@@ -47,6 +47,10 @@ if ($dst eq 'NEWS') {
                 -upfx => "$base_url/",
                 -hr => 1,
                 zfh => $out,
+                env => {
+                        HTTP_HOST => 'public-inbox.org',
+                        'psgi.url_scheme' => 'https',
+                },
         };
         if ($dst eq 'NEWS.html') {
                 html_start($out, $ctx);