Fix #6280 - puppetdoc crashing on string interpolation

The following manifest was crashing puppetdoc:
  class test {
     include "test::$operatingsystem"
  }

Because the quoted string is "rendered" as a concat AST, which in turn
ended being an array when entering RDoc.

Signed-off-by: Brice Figureau <brice-puppet@daysofwonder.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/puppet/util/rdoc/parser.rb b/lib/puppet/util/rdoc/parser.rb
index f9becede1..f59af64f9 100644
--- a/lib/puppet/util/rdoc/parser.rb
+++ b/lib/puppet/util/rdoc/parser.rb
@@ -157,8 +157,8 @@ class Parser
 
       if stmt.is_a?(Puppet::Parser::AST::Function) and ['include','require'].include?(stmt.name)
         stmt.arguments.each do |included|
-          Puppet.debug "found #{stmt.name}: #{included.value}"
-          container.send("add_#{stmt.name}",Include.new(included.value, stmt.doc))
+          Puppet.debug "found #{stmt.name}: #{included}"
+          container.send("add_#{stmt.name}",Include.new(included.to_s, stmt.doc))
         end
       end
     end