Replace custom collection with Set

The original constraints that led to using a custom collection rather
than Array or Set here no longer exist, so let's avoid the pointless
abstraction here.

1 files changed, 2 insertions, 6 deletions

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 9234b45df..7ba0cd01e 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -785,12 +785,8 @@ private
     end
 
     def fails_with compiler, &block
-      @cc_failures ||= CompilerFailures.new
-      @cc_failures << if block_given?
-        CompilerFailure.new(compiler, &block)
-      else
-        CompilerFailure.new(compiler)
-      end
+      @cc_failures ||= Set.new
+      @cc_failures << CompilerFailure.new(compiler, &block)
     end
 
     def test &block