Reference prism after require

Author: kddnewton

test/prism/format_errors_test.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
-return if Prism::BACKEND == :FFI
-
 require_relative "test_helper"
 
+return if Prism::BACKEND == :FFI
+
 module Prism
   class FormatErrorsTest < TestCase
     def test_format_errors