Remove comment if description is empty

If the description property is an empty string puppet should remove the
comment sign (#) alltogether

Author: stschulte

lib/puppet/provider/oratab/parsed.rb

@@ -27,7 +27,7 @@
     },
     :to_line    => proc { |h|
       str = "#{h[:name]}:#{h[:home]}:#{h[:atboot]}"
-      if h[:description] and h[:description] != :absent
+      if description = h[:description] and description != :absent and !description.empty?
         str += " # #{description}"
       end
       str