Function foreachvalue

src/master/master.cpp:1222–1232

  CHECK(inverseOffers.empty());

  foreachvalue (Future<Option<string>> future, authenticating) {
    // NOTE: This is necessary during tests because a copy of
    // this future is used to setup authentication timeout. If a
    // test doesn't discard this future, authentication timeout might
    // fire in a different test and any associated callbacks
    // (e.g., '_authenticate()') would be called. This is because the
    // master pid doesn't change across the tests.
    // TODO(vinod): This seems to be a bug in libprocess or the
    // testing infrastructure.
    future.discard();
  }

  foreachvalue (Role* role, roles) {
    delete role;