Fix modifying frozen string in foswiki_dir

libraries/helper.rb

@@ -13,6 +13,7 @@ module Foswiki
               node_obj['foswiki']['config']["#{name.capitalize}Dir"]
             end
       return nil if dir.nil?
+      dir = dir.dup
       while dir =~ /\$Foswiki::cfg{/
         dir.gsub!(/\$Foswiki::cfg{(\w+)}/, node_obj['foswiki'][$1])
       end

metadata.rb

@@ -3,7 +3,7 @@ maintainer       'HPC'
 maintainer_email 'hpc@gsi.de'
 license          'All rights reserved'
 description      'Installs/Configures Foswiki'
-version          '2.2.9'
+version          '2.2.10'
 depends          'apache2', '< 6.0'
 supports         'debian'
 supports         'ubuntu'