ActivityPub: Small refactor.

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -129,19 +129,18 @@ def increase_poll_votes_if_vote(_create_data), do: :noop
   # TODO rewrite in with style
   @spec persist(map(), keyword()) :: {:ok, Activity.t() | Object.t()}
   def persist(object, meta) do
-    local = Keyword.fetch!(meta, :local)
-    {recipients, _, _} = get_recipients(object)
-
-    {:ok, activity} =
+    with local <- Keyword.fetch!(meta, :local),
+         {recipients, _, _} <- get_recipients(object),
+         {:ok, activity} <-
            Repo.insert(%Activity{
              data: object,
              local: local,
              recipients: recipients,
              actor: object["actor"]
-      })
-
+           }) do
       {:ok, activity, meta}
     end
+  end
 
   def insert(map, local \\ true, fake \\ false, bypass_actor_check \\ false) when is_map(map) do
     with nil <- Activity.normalize(map),