block check can't be done inside the same try-expression as Subscription::getSubscription(), since if that throws a NoResultException, the block check will not be done. and if you're blocking someone you are not subscribing to them.

lib/apiaction.php

@@ -274,11 +274,11 @@ class ApiAction extends Action
                 $sub = Subscription::getSubscription($this->scoped, $profile);
                 // Notifications on?
                 $twitter_user['following'] = true;
-                $twitter_user['statusnet_blocking']  = $this->scoped->hasBlocked($profile);
                 $twitter_user['notifications'] = ($sub->jabber || $sub->sms);
             } catch (NoResultException $e) {
                 // well, the values are already false...
             }
+            $twitter_user['statusnet_blocking']  = $this->scoped->hasBlocked($profile);            
         }
 
         if ($get_notice) {
@@ -1550,4 +1550,4 @@ class ApiAction extends Action
 
         return $uri;
     }
-}
+}