Add QueueQuitter#closed? to queue_quitter_pipe.rb

Since we rely on this class being an IO-like class,
in Yahns::Queue#worker_thread we're using this method.

This fixes an actual error on lib/yahns/queue_kqueue.rb:56

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/yahns/queue_quitter_pipe.rb b/lib/yahns/queue_quitter_pipe.rb
index eabfb00..789eacd 100644
--- a/lib/yahns/queue_quitter_pipe.rb
+++ b/lib/yahns/queue_quitter_pipe.rb
@@ -22,4 +22,8 @@ class Yahns::QueueQuitter # :nodoc:
     @reader.close
     @to_io.close
   end
+
+  def closed?
+    @to_io.closed?
+  end
 end