[PATCH] last_data_recv: do not assume Unicorn includes all constants

[Eric Wong <normalperson@yhbt.net>]

Some projects may load parts of Unicorn and not others.
---
 lib/raindrops/last_data_recv.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/raindrops/last_data_recv.rb b/lib/raindrops/last_data_recv.rb
index f96a776..b4808a1 100644
--- a/lib/raindrops/last_data_recv.rb
+++ b/lib/raindrops/last_data_recv.rb
@@ -73,7 +73,9 @@ class Raindrops::LastDataRecv
   # :startdoc
 
   def initialize(opts = {})
-    Raindrops::Aggregate::LastDataRecv.cornify! if defined?(Unicorn)
+    if defined?(Unicorn::HttpServer::LISTENERS)
+      Raindrops::Aggregate::LastDataRecv.cornify!
+    end
     @aggregate =
       opts[:aggregate] || Raindrops::Aggregate::LastDataRecv.default_aggregate
   end
-- 
Eric Wong