add a space

db/migrate/20140407135544_fix_namespaces.rb

 class FixNamespaces < ActiveRecord::Migration
   def up
     Namespace.where('name <> path and type is null').each do |namespace|
-     namespace.update_attribute(:name, namespace.path)
+      namespace.update_attribute(:name, namespace.path)
     end
   end
 
   def down
   end
-end
+end
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