Fix sporadic failure in test_startfile.
Wait for the child process to terminate before ending the test, so that the
regrtest cleanup code doesn't get an error when it tries to delete the
temporary CWD.
diff --git a/Misc/NEWS b/Misc/NEWS
index ad532ab..51a0b67 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -367,6 +367,8 @@
Tests
-----
+- Fix test_startfile to wait for child process to terminate before finishing.
+
- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows
platforms. Patch by Nadeem Vawda.