(#5171) Made filebucket able to perform diffs

It is now possible to ask the filebucket to diff two files using a URL
of the form:

https://puppet/production/file_bucket_file/md5/{first file hash}?diff_with={second file hash}

The returned diff is a string, the output of the "diff" command.

Paired-with: Paul Berry <paul@puppetlabs.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/puppet/network/http/handler.rb b/lib/puppet/network/http/handler.rb
index 61ae2d2fc..f22498b70 100644
--- a/lib/puppet/network/http/handler.rb
+++ b/lib/puppet/network/http/handler.rb
@@ -109,7 +109,11 @@ module Puppet::Network::HTTP::Handler
     format = format_to_use(request)
     set_content_type(response, format)
 
-    set_response(response, result.render(format))
+    if result.respond_to?(:render)
+      set_response(response, result.render(format))
+    else
+      set_response(response, result)
+    end
   end
 
   # Execute our search.