Really fix race condition in logger translator test

Signed-off-by: James Fish <[email protected]>

Author: fishcakez

lib/logger/test/logger/translator_test.exs

@@ -483,6 +483,7 @@ defmodule Logger.TranslatorTest do
     assert capture_log(:info, fn ->
       {:ok, pid} = Supervisor.start_child(sup, [MyGenServer, []])
       catch_exit(GenServer.call(pid, :error))
+      [] = Supervisor.which_children(sup)
     end) =~ "Start Call: GenServer.start_link/?"
   end