Memory leak plugged

memory_leak.diff

diff --git a/lib/pubhub.js b/lib/pubhub.js
index 1878e96..9d22ab8 100644
--- a/lib/pubhub.js
+++ b/lib/pubhub.js
@@ -152,6 +152,11 @@ PubHub.prototype.fetch = function(options) {
         console.log('New data found on %s.', feedString);
         self.emit('changed', data);
       }
+
+      // Explicitly null out the data so it doesn't hang around after we're
+      // done with it.
+      data = null;
+      res = null;
     });
   });
 
@@ -234,6 +239,8 @@ PubHub.prototype.publishOne = function(subscriber, data) {
           else {
             console.log('Published %s to %s.', feedString, subscriberString);
             clearInterval(retryId);
+            retry = null;
+            res = null;
           }
         });