redis: bind to localhost by default

This avoids leaving a port open to the local network and also the annoying
firewall confirmation dialogs every time redis starts.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/redis.rb

@@ -27,6 +27,7 @@ class Redis < Formula
     inreplace "redis.conf" do |s|
       s.gsub! "/var/run/redis.pid", "#{var}/run/redis.pid"
       s.gsub! "dir ./", "dir #{var}/db/redis/"
+      s.gsub! "\# bind 127.0.0.1", "bind 127.0.0.1"
     end
 
     doc.install Dir["doc/*"]