Issue #5918: Fix a crash in the parser module.

Patch by Amaury.
diff --git a/Misc/NEWS b/Misc/NEWS
index 58f381b..109297e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -293,6 +293,8 @@
 Library
 -------
 
+- Issue #5918: Fix a crash in the parser module.
+
 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
 
 - Issue #6022: a test file was created in the current working directory by