security/nmap: Fix broken --proxy
Upstream broke --proxy in 7.90 and was fixed after 7.91 and is yet to be
released.
PR: 256968
Submitted by: Ting-Wei Lan <lantw44@gmail.com>
Reported by: Ting-Wei Lan <lantw44@gmail.com>
Obtained from: Upstream 169d7e5a922ef8e63b51ee2bdf4fd4ad60ed2689
MFH: 2020Q3