Fix a reference leak found by Georg, when compiling a class nested in another class.
Test is run with "regrtest.py -R:: test_compile"
Backport of r62015
diff --git a/Misc/NEWS b/Misc/NEWS
index 695e71b..c914050 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
Core and builtins
-----------------
+- The compilation of a class nested in another class used to leak one
+ reference on the outer class name.
+
- Issue #1477: With narrow Unicode builds, the unicode escape sequence
\Uxxxxxxxx did not accept values outside the Basic Multilingual Plane. This
affected raw unicode literals and the 'raw-unicode-escape' codec. Now