Fix blacklist.rb syntax error

Closes Homebrew/homebrew#27102. Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Fix blacklist.rb syntax error
000e9eec · Ben Moss · Jack Nagel · 3326d0d8 · 000e9eec
Commit 000e9eec authored 11 years ago by Ben Moss Committed by Jack Nagel 11 years ago
--- a/Library/Homebrew/blacklist.rb
+++ b/Library/Homebrew/blacklist.rb
 def blacklisted? name
  case name.downcase
-  when 'screen', /^rubygems?$/, then <<-EOS.undent
+  when 'screen', /^rubygems?$/ then <<-EOS.undent
    Apple distributes #{name} with OS X, you can find it in /usr/bin.
    EOS
  when 'libpcap' then <<-EOS.undent