bpo-40910: PyConfig_Clear() clears _orig_argv (GH-20886)


bpo-40910, bpo-40953: PyConfig_Clear() clears _orig_argv.
(cherry picked from commit e2d47a0568c6da9229580829917fd6aa702133b3)

Co-authored-by: Victor Stinner <vstinner@python.org>
diff --git a/Python/initconfig.c b/Python/initconfig.c
index 998ceb7..885525b 100644
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -601,6 +601,8 @@
     CLEAR(config->run_module);
     CLEAR(config->run_filename);
     CLEAR(config->check_hash_pycs_mode);
+
+    _PyWideStringList_Clear(&config->_orig_argv);
 #undef CLEAR
 }