Merge pull request #1 from ronnocol/patch-1

Update pipe.rb output - Fix LOGSTASH-1860

Author: ronnocol

lib/logstash/outputs/pipe.rb

@@ -46,7 +46,7 @@ def receive(event)
     begin
       pipe = get_pipe(command)
       pipe.puts(output)
-    rescue IOError, Errno::EPIPE => e
+    rescue IOError, Errno::EPIPE, Errno::EBADF => e
       @logger.error("Error writing to pipe, closing pipe.", :command => command, :pipe => pipe)
       drop_pipe(command)
       retry