Homebrew/homebrew — pull request #29665 by dch (2014-05-28 20:19:48+00:00)
Title: ngrep: additional flag prevents segfault

Known issue on BSD platforms since v1.4.4 and
configure produces a warning if not present:

https://github.com/jpr5/ngrep/commit/e29fc29

NB ngrep seems to have moved to git at
https://github.com/jpr5/ngrep but I didn't get
master to compile successfully so I left it out.