games/openarena: Fix CVE-2017-6903
- Backport fix based on patchset for urbanterror [1]
[1] https://github.com/Barbatos/ioq3-for-UrbanTerror-4/pull/73
PR: 217911
Submitted by: miwi
Approved by: miwi (mentor)
MFH: 2017Q2
Security: CVE-2017-6903
Security: e48355d7-1548-11e7-8611-0090f5f2f347
Differential Revision: https://reviews.freebsd.org/D10176