* test/test_tempfile.rb (test_{new,create}_traversal_dir): should not assume `t`

is always set.  if `t` is nil, `NoMethodError` will be raised and the real
  cause will be hidden.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63096 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/test_tempfile.rb

@@ -391,7 +391,7 @@ puts Tempfile.new('foo').path
     actual = Dir.glob(TRAVERSAL_PATH + '*').count
     assert_equal expect, actual
   ensure
-    t.close!
+    t&.close!
   end
 
   def test_create_traversal_dir
@@ -400,6 +400,6 @@ puts Tempfile.new('foo').path
     actual = Dir.glob(TRAVERSAL_PATH + '*').count
     assert_equal expect, actual
   ensure
-    t.close
+    t&.close
   end
 end