leakchecker.rb: get rid of uninitialized Tempfile

* test/lib/leakchecker.rb (LeakChecker#find_tempfiles): get rid of
  errors on uninitialized Tempfile, which can be left when
  Dir.tmpdir failed or by Tempfile.allocate.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57437 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/test/test_tempfile.rb b/test/test_tempfile.rb
index 361613173f..7f7f75c7db 100644
--- a/test/test_tempfile.rb
+++ b/test/test_tempfile.rb
@@ -20,6 +20,10 @@ class TestTempfile < Test::Unit::TestCase
     end
   end
 
+  def test_leackchecker
+    assert_instance_of(Tempfile, Tempfile.allocate)
+  end
+
   def test_basic
     t = tempfile("foo")
     path = t.path