download_strategy: make sure the inspected url is used

Closes Homebrew/homebrew#40940.

Signed-off-by: Xu Cheng <xucheng@me.com>

Library/Homebrew/download_strategy.rb

@@ -274,6 +274,7 @@ class CurlDownloadStrategy < AbstractFileDownloadStrategy
       urls = actual_urls
       unless urls.empty?
         ohai "Downloading from #{urls.last}"
+        @url = urls.last
         if !ENV["HOMEBREW_NO_INSECURE_REDIRECT"].nil? && @url.start_with?("https://") &&
           urls.any? { |u| !u.start_with? "https://" }
           raise "HTTPS to HTTP redirect detected & HOMEBREW_NO_INSECURE_REDIRECT is set."