Thanks for the vote of confidence in my abilities, though I would run far far away from any code I wrote ;-)
The warning can safely be ignored as the code still functions. I eventually found the cause the long way, but didn't have time to find/test a fix. Is the code not working for you or were you just concerned about the warning? If you want to play around, the document you referenced says to do:
use LWP::Simple '!head';
Cheers - L~R
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