Question about the code

[rustyBSD]

Hi,
it's about src/usr.sbin/unbound/ldns/drill/work.c
at line 184:

What is the 'fp' FILE used for ? Here - if I'm not
mistaken - we fopen() filename, and that's it. We
don't use the 'fp' variable, and we never fclose()
it.

Am I wrong ?

Thanks