FIX: auto-closing poll wasn't working

plugins/poll/jobs/regular/close_poll.rb

@@ -3,7 +3,7 @@ module Jobs
   class ClosePoll < Jobs::Base
 
     def execute(args)
-      DiscoursePoll::Poll.toggle_status(args[:post_id], args[:poll_name], "closed", -1)
+      DiscoursePoll::Poll.toggle_status(args[:post_id], args[:poll_name], "closed", Discourse.system_user)
     end
 
   end

plugins/poll/spec/jobs/regular/close_poll_spec.rb

@@ -0,0 +1,15 @@
+require "rails_helper"
+
+describe Jobs::ClosePoll do
+
+  it "automatically closes a poll" do
+    post = Fabricate(:post, raw: "[poll]\n- A\n- B\n[/poll]")
+
+    expect(post.polls.first.closed?).to eq(false)
+
+    Jobs::ClosePoll.new.execute(post_id: post.id, poll_name: "poll")
+
+    expect(post.polls.first.closed?).to eq(true)
+  end
+
+end