Make sure ENV['RAILS_ENV'] and RAILS_ENV are kept in sync

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2539 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/commands/runner.rb

@@ -20,11 +20,8 @@
   opts.parse!
 end
 
-if defined?(RAILS_ENV)
-  RAILS_ENV.replace(options[:environment])
-else
-  ENV["RAILS_ENV"] = options[:environment]
-end
+ENV["RAILS_ENV"] = options[:environment]
+RAILS_ENV.replace(options[:environment]) if defined?(RAILS_ENV)
 
 require RAILS_ROOT + '/config/environment'
 eval(ARGV.first)