[Commits] [wesnoth/wesnoth] 174cae: Fix missing include on Travis Mac build

[GitHub]

  Branch: refs/heads/wfl_memleak_fix_attempt
  Home:   https://github.com/wesnoth/wesnoth
  Commit: 174cae5ee8b425d9d35cf8fa1014f7f60bf70d31
      https://github.com/wesnoth/wesnoth/commit/174cae5ee8b425d9d35cf8fa1014f7f60bf70d31
  Author: Celtic Minstrel <CelticMinstrel at users.noreply.github.com>
  Date:   2017-04-04 (Tue, 04 Apr 2017)

  Changed paths:
    M src/formula/callable_fwd.hpp

  Log Message:
  -----------
  Fix missing include on Travis Mac build