Fix ResourceWarning in Lib/test/threaded_import_hangers.py
diff --git a/Lib/test/threaded_import_hangers.py b/Lib/test/threaded_import_hangers.py
index d750874..adf03e3 100644
--- a/Lib/test/threaded_import_hangers.py
+++ b/Lib/test/threaded_import_hangers.py
@@ -29,7 +29,7 @@
for name, func, args in [
# Bug 147376: TemporaryFile hung on Windows, starting in Python 2.4.
- ("tempfile.TemporaryFile", tempfile.TemporaryFile, ()),
+ ("tempfile.TemporaryFile", lambda: tempfile.TemporaryFile().close(), ()),
# The real cause for bug 147376: ntpath.abspath() caused the hang.
("os.path.abspath", os.path.abspath, ('.',)),