Clean up commit f366325b3b a bit

CHANGELOG.md

@@ -2,6 +2,7 @@ master
 ===
 
 * The preview server can now serve over HTTPS using the `--https` flag. It will use an automatic self-signed cert which can be overridden using `--ssl_certificate` and `--ssl_private_key`. These settings can also be set in `config.rb`
+* The preview server URL will use 'localhost' rather than '0.0.0.0'.
 
 3.3.11
 ===

middleman-core/lib/middleman-core/preview_server.rb

@@ -267,7 +267,7 @@ module Middleman
       # Returns the URI the preview server will run on
       # @return [URI]
       def uri
-        host = @host.eql?('0.0.0.0') ? 'localhost' : @host
+        host = @host == '0.0.0.0' ? 'localhost' : @host
         scheme = https? ? 'https' : 'http'
         URI("#{scheme}://#{host}:#{@port}")
       end