[gimp-web] tools: don't verify 2 times checksums from the main download server.

[Jehan <jehanp src gnome org>]

commit 6bd4e02830d8099c9188e4f5fe116463c01a63e4
Author: Jehan <jehan girinstud io>
Date:   Fri Apr 29 22:15:15 2022 +0200

    tools: don't verify 2 times checksums from the main download server.
    
    This is our base checksum data, so no need to re-download and re-verify
    it.

 tools/downloads/gimp-check-mirrors.py | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/tools/downloads/gimp-check-mirrors.py b/tools/downloads/gimp-check-mirrors.py
index bb553a96..7efdc8e2 100755
--- a/tools/downloads/gimp-check-mirrors.py
+++ b/tools/downloads/gimp-check-mirrors.py
@@ -123,6 +123,10 @@ for local_uri in local_uris:
     #with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
     with fileinput.input(files=(args.mirrorsfile), mode='r') as f:
         for line in f:
+            if args.verify_checksum and line.strip() == 'https://download.gimp.org/pub/gimp/':
+              # Passing the main server which is also in the list. It's
+              # our checksum base, we don't need to check it again.
+              continue
             mirror_uri = line.strip() + local_uri
             check_count += 1