From e95048e8bb05ed23e7bf281ad445ef4c27b28433 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 3 Dec 2016 13:05:40 -0800
Subject: [PATCH] also do not leak the mode string if creating the file fails

---
 Modules/posixmodule.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 12f6bc034f..fb435e33e2 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -6909,8 +6909,10 @@ posix_fdopen(PyObject *self, PyObject *args)
     /* The dummy filename used here must be kept in sync with the value
        tested against in gzip.GzipFile.__init__() - see issue #13781. */
     f = PyFile_FromFile(NULL, "<fdopen>", orgmode, fclose);
-    if (f == NULL)
+    if (f == NULL) {
+        PyMEM_FREE(mode);
         return NULL;
+    }
     Py_BEGIN_ALLOW_THREADS
 #if !defined(MS_WINDOWS) && defined(HAVE_FCNTL_H)
     if (mode[0] == 'a') {
-- 
2.50.0