Issue #20440: Applied yet one patch for using Py_SETREF.
The patch is automatically generated, it replaces the code that uses Py_CLEAR.
diff --git a/Modules/_lzmamodule.c b/Modules/_lzmamodule.c
index 7e4e2df..9bc8033 100644
--- a/Modules/_lzmamodule.c
+++ b/Modules/_lzmamodule.c
@@ -1011,9 +1011,8 @@
     if (d->eof) {
         d->needs_input = 0;
         if (lzs->avail_in > 0) {
-            Py_CLEAR(d->unused_data);
-            d->unused_data = PyBytes_FromStringAndSize(
-                (char *)lzs->next_in, lzs->avail_in);
+            Py_SETREF(d->unused_data,
+                      PyBytes_FromStringAndSize((char *)lzs->next_in, lzs->avail_in));
             if (d->unused_data == NULL)
                 goto error;
         }