Make minor changes for cookstyle

libraries/config.rb

@@ -68,7 +68,7 @@ module Foswiki
     end
 
     def foswiki_resolve(value, tools_dir = nil)
-      return nil if value.nil?
+      return if value.nil?
       while value =~ /\$Foswiki::cfg{/
         value = value.gsub(/\$Foswiki::cfg({[A-Za-z}{]+})/) do |_|
           foswiki_get(Regexp.last_match[1], tools_dir)

libraries/helper.rb

@@ -12,7 +12,7 @@ module Foswiki
             else
               node_obj['foswiki']['config']["#{name.capitalize}Dir"]
             end
-      return nil if dir.nil?
+      return if dir.nil?
       dir = dir.dup
       while dir =~ /\$Foswiki::cfg{/
         dir.gsub!(/\$Foswiki::cfg{([\w}{]+)}/) do |_|

recipes/_cache.rb

@@ -7,7 +7,7 @@
 # All rights reserved - Do Not Redistribute
 #
 
-Chef::Recipe.include Foswiki::Helper
+Chef::DSL::Recipe.include Foswiki::Helper
 
 username = 'foswiki'
 password = ''

recipes/default.rb

@@ -7,7 +7,7 @@
 # All rights reserved - Do Not Redistribute
 #
 
-Chef::Recipe.include Foswiki::Dependencies
+Chef::DSL::Recipe.include Foswiki::Dependencies
 
 # Install needed packages
 if platform_family? 'debian'