Crash: "free(): double free detected in tcache 2" when using --load-cookies

Using the latest wget2 from git (fb69b5d2), the attached cookies file causes wget2 to crash with a double free.

wget2 --load-cookies cookies.txt 
free(): double free detected in tcache 2
Aborted (core dumped)

Note if the cookies have expired I get

wget2 --load-cookies cookies.txt 
Failed to read cookies
Nothing to do - goodbye

The cookies file was creating by going to this site and exporting the cookies with the Firefox "Export Cookies" plugin.