#735444 Doug Preble: PubSubHubbub - Fix 'Subscription refused by callback URL' with PHP 5.2.0.

CHANGELOG.txt

@@ -4,6 +4,8 @@
 Feeds 6.x 1.0 xxxxx xx, 2010-xx-xx
 ----------------------------------
 
+- #735444 Doug Preble: PubSubHubbub - Fix "Subscription refused by callback URL"
+  with PHP 5.2.0.
 - alex_b: Suppress namespace warnings when parsing feeds for subscription in
   PuSHSubscriber.inc
 - #724184 ekes: catch failures when parsing for PubSubHubbub hub and self.

libraries/PuSHSubscriber.inc

@@ -276,7 +276,7 @@ class PuSHSubscriber {
    * Helper for loading a subscription.
    */
   protected function loadSubscription() {
-    return call_user_func("{$this->subscription_class}::load", $this->domain, $this->subscriber_id);
+    return call_user_func(array($this->subscription_class, 'load'), $this->domain, $this->subscriber_id);
   }
 
   /**