Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
          If both the HTTP and HTTPS versions
          return 200 OK and serve the same content:
            Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmas...@al2klimov.de>
---
 Continuing my work started at 93431e0607e5.

 If there are any URLs to be removed completely or at least not HTTPSified:
 Just clearly say so and I'll *undo my change*.
 See also https://lkml.org/lkml/2020/6/27/64

 If there are any valid, but yet not changed URLs:
 See https://lkml.org/lkml/2020/6/26/837

 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4c820607540b..4f4f6616836f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2904,7 +2904,7 @@ sub process {
                                $herecurr) if (!$emitted_corrupt++);
                }
 
-# UTF-8 regex found at 
http://www.w3.org/International/questions/qa-forms-utf-8.en.php
+# UTF-8 regex found at 
https://www.w3.org/International/questions/qa-forms-utf-8.en.php
                if (($realfile =~ /^$/ || $line =~ /^\+/) &&
                    $rawline !~ m/^$UTF8*$/) {
                        my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/);
-- 
2.27.0

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