Restore GIL in nis_cat in case of error.
diff --git a/Misc/NEWS b/Misc/NEWS
index 8a1d414..59ad9d3 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -57,6 +57,8 @@
 Extensions
 ----------
 
+- Restore GIL in nis_cat in case of error.
+
 - Issue #665761: ``functools.reduce()`` will no longer mask exceptions
   other than ``TypeError`` raised by the iterator argument.