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 022ad20..8063d02 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -315,6 +315,8 @@
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.