FIX: Broken serializer spec with no payload

FIX: Broken serializer spec with no payload

diff --git a/app/serializers/reviewable_queued_post_serializer.rb b/app/serializers/reviewable_queued_post_serializer.rb
index dbc06ac..ebdd4d0 100644
--- a/app/serializers/reviewable_queued_post_serializer.rb
+++ b/app/serializers/reviewable_queued_post_serializer.rb
@@ -24,7 +24,7 @@ class ReviewableQueuedPostSerializer < ReviewableSerializer
   end
 
   def include_reply_to_post_number?
-    object.payload['reply_to_post_number'].present?
+    object.payload.present? && object.payload['reply_to_post_number'].present?
   end
 
 end

GitHub sha: ea5767e9