Remove default value from Keg#link_dir mode parameter

Now that this is always called with an explicit mode argument, let's
make sure it stays that way.

1 files changed, 1 insertions, 1 deletions

diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index ab8a45300..1d0d14e7e 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -255,7 +255,7 @@ class Keg < Pathname
   end
 
   # symlinks the contents of self+foo recursively into #{HOMEBREW_PREFIX}/foo
-  def link_dir foo, mode=OpenStruct.new
+  def link_dir foo, mode
     root = self+foo
     return unless root.exist?
     root.find do |src|