$OpenBSD$

Work around pthreads FIFO fdlock bug.

Index: spec/ruby/core/file/open_spec.rb
--- spec/ruby/core/file/open_spec.rb.orig
+++ spec/ruby/core/file/open_spec.rb
@@ -600,6 +600,7 @@ describe "File.open" do
 
   platform_is_not :windows do
     describe "on a FIFO" do
+      next
       before :each do
         @fifo = tmp("File_open_fifo")
         system "mkfifo #{@fifo}"
