bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587)

No longer use deprecated aliases to functions:

* Replace PyObject_MALLOC() with PyObject_Malloc()
* Replace PyObject_REALLOC() with PyObject_Realloc()
* Replace PyObject_FREE() with PyObject_Free()
* Replace PyObject_Del() with PyObject_Free()
* Replace PyObject_DEL() with PyObject_Free()
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 87fe3a1..edb850e 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2295,7 +2295,7 @@ PySSL_dealloc(PySSLSocket *self)
     Py_XDECREF(self->ctx);
     Py_XDECREF(self->server_hostname);
     Py_XDECREF(self->owner);
-    PyObject_Del(self);
+    PyObject_Free(self);
     Py_DECREF(tp);
 }