[Python-checkins] gh-95369: add missing decref in error case of exception group's split (GH-95370)

[miss-islington]

https://github.com/python/cpython/commit/6934726d222222e2429b763396b266674d906e98
commit: 6934726d222222e2429b763396b266674d906e98
branch: 3.11
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2022-07-28T04:28:46-07:00
summary:

gh-95369: add missing decref in error case of exception group's split (GH-95370)

(cherry picked from commit bceb197947bbaebb11e01195bdce4f240fdf9332)

Co-authored-by: Irit Katriel <1055913+iritkatriel at users.noreply.github.com>

files:
M Objects/exceptions.c

diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index c6af82a466855..3c4df2facfe2e 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -1114,6 +1114,7 @@ exceptiongroup_split_recursive(PyObject *exc,
             assert(PyList_CheckExact(match_list));
             if (PyList_Append(match_list, rec_result.match) < 0) {
                 Py_DECREF(rec_result.match);
+                Py_XDECREF(rec_result.rest);
                 goto done;
             }
             Py_DECREF(rec_result.match);