bpo-30642: IDLE: Fix test_query refleak (#2147) (#2161)

terryjreedy · web-flow · commit 2bfb45d447c4 · 2017-06-13T10:11:02.000-04:00
Patch by Louie Lu. (cherry picked from commit b070fd2)
diff --git a/Lib/idlelib/idle_test/test_query.py b/Lib/idlelib/idle_test/test_query.py
@@ -258,6 +258,7 @@ def setUpClass(cls):
 
     @classmethod
     def tearDownClass(cls):
+        del cls.dialog.destroy
         del cls.dialog
         cls.root.destroy()
         del cls.root
