dns/dnsmasq: Backport upstream commit to fix PXEBOOT regression
Reference:
https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=84415a87be571a6da82c910c1b87b194e5f54727
MFH: 2026Q1
(cherry picked from commit 13100fe1ce1d4d3fe3ed172400d3a20033fe0eeb)