Prevent UnicodeDecodeErrors in ctypes with non-ascii error messages.
Fixes issue #4429.

Reviewed by Amaury Forgeot d'Arc.
diff --git a/Misc/NEWS b/Misc/NEWS
index 535cca4..091ef43 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -22,6 +22,8 @@
 Library
 -------
 
+- Issue #4429: Fixed UnicodeDecodeError in ctypes.
+
 - Issue #4373: Corrected a potential reference leak in the pickle module and
   silenced a false positive ref leak in distutils.tests.test_build_ext.