bpo-33029: Fix signatures of getter and setter functions. (GH-10746)


Fix also return type for few other functions (clear, releasebuffer).
(cherry picked from commit d4f9cf5545d6d8844e0726552ef2e366f5cc3abd)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
diff --git a/Python/context.c b/Python/context.c
index ba64903..90c71e3 100644
--- a/Python/context.c
+++ b/Python/context.c
@@ -1105,14 +1105,14 @@
 }
 
 static PyObject *
-token_get_var(PyContextToken *self)
+token_get_var(PyContextToken *self, void *Py_UNUSED(ignored))
 {
     Py_INCREF(self->tok_var);
     return (PyObject *)self->tok_var;
 }
 
 static PyObject *
-token_get_old_value(PyContextToken *self)
+token_get_old_value(PyContextToken *self, void *Py_UNUSED(ignored))
 {
     if (self->tok_oldval == NULL) {
         return get_token_missing();
diff --git a/Python/traceback.c b/Python/traceback.c
index 95bef64..8b32864 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -178,11 +178,12 @@
     return 0;
 }
 
-static void
+static int
 tb_clear(PyTracebackObject *tb)
 {
     Py_CLEAR(tb->tb_next);
     Py_CLEAR(tb->tb_frame);
+    return 0;
 }
 
 PyTypeObject PyTraceBack_Type = {