=== Ruby posix_mq 2.4.1 / 2018-01-31 00:02 UTC

  This release fixes a problem affecting users of newer clang (5.x+)
  and Ruby 2.5.0:  https://bugs.ruby-lang.org/issues/14425
  There is no need to upgrade if using gcc or Ruby <= 2.4.

  * drop extra args to rb_funcall