Update a link to the libcurl mailinglist archive

diff --git a/TODO b/TODO
index 932be82..239e480 100644 (file)
--- a/TODO
+++ b/TODO
@@ -12,7 +12,7 @@ https://www.privoxy.org/faq/general.html#DONATE
     (variables too). Could probably reuse large parts of Privoxy-Filter-Test.
     Note that there is currently work in progress to leverage curl's
     test suite, patches have been submitted upstream:
-    http://curl.haxx.se/mail/lib-2014-06/0070.html
+    https://curl.se/mail/lib-2014-06/0070.html
 
 3)  Fix some more XXX: comments.