download_strategy: fix url reassign

We need reassign url after urls are inspected.

Library/Homebrew/download_strategy.rb

@@ -274,11 +274,11 @@ 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."
         end
+        @url = urls.last
       end
 
       had_incomplete_download = temporary_path.exist?