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-rw-r--r--lib/dtas/compat_onenine.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/dtas/compat_onenine.rb b/lib/dtas/compat_onenine.rb
index 568491b..e789114 100644
--- a/lib/dtas/compat_onenine.rb
+++ b/lib/dtas/compat_onenine.rb
@@ -12,6 +12,6 @@ end unless String.method_defined?(:b)
 
 def IO # :nodoc:
   def self.pipe # :nodoc:
-    super.map! { |io| io.close_on_exec = true; io }
+    super.each { |io| io.close_on_exec = true }
   end
 end if RUBY_VERSION.to_f <= 1.9