From 4dd83338997669939dd574efb01dfb8154765196 Mon Sep 17 00:00:00 2001
From: Wang Rui <55612496+wr-web@users.noreply.github.com>
Date: Sun, 10 May 2026 13:56:44 +0800
Subject: [PATCH] Fix Reference Counting (Use-After-Free) Bugs for
 `PyTuple_SetItem`

---
 src/calibre/utils/tts/piper.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/calibre/utils/tts/piper.cpp b/src/calibre/utils/tts/piper.cpp
index 17852fb67c..c08f24cfa7 100644
--- a/src/calibre/utils/tts/piper.cpp
+++ b/src/calibre/utils/tts/piper.cpp
@@ -290,7 +290,6 @@ normalize(const char *text) {
     PyObject *t = PyUnicode_FromString(text);
     if (!t) return NULL;
     if (PyTuple_SetItem(normalize_data.args, 1, t) != 0) {
-        Py_DECREF(t);
         return NULL;
     }
     return PyObject_CallObject(normalize_data.func, normalize_data.args);