Fix reference leaks in error callbacks.

CHANGELOG.md

@@ -7,8 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-- Fix coroutine iterator reference leak.
-- Fix early exit of `pyawaitable_unpack_arb` if a `NULL` value was saved.
+- Fixed coroutine iterator reference leak.
+- Fixed reference leak in error callbacks.
+- Fixed early exit of `pyawaitable_unpack_arb` if a `NULL` value was saved.
 - Added integer value saving and unpacking (`pyawaitable_save_int` and `pyawaitable_unpack_int`).
 
 ## [1.0.0] - 2024-06-24

src/_pyawaitable/genwrapper.c

@@ -50,6 +50,7 @@ genwrapper_new(PyAwaitableObject *aw)
     return (PyObject *) g;
 }
 
+// Steals references to `cb->coro` and `await`
 int
 genwrapper_fire_err_callback(
     PyObject *self,
@@ -89,6 +90,8 @@ genwrapper_fire_err_callback(
         return -1;
     }
 
+    Py_DECREF(cb->coro);
+    Py_XDECREF(await);
     Py_DECREF(err);
     return 0;
 }