let's not return NULL from functions that should return ints
diff --git a/Python/traceback.c b/Python/traceback.c
index 1f611ba..d19c594 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -258,7 +258,7 @@
     if (fd < 0) {
         Py_DECREF(io);
         Py_DECREF(binary);
-        return NULL;
+        return 0;
     }
     found_encoding = PyTokenizer_FindEncodingFilename(fd, filename);
     encoding = (found_encoding != NULL) ? found_encoding : "utf-8";
@@ -267,7 +267,7 @@
         Py_DECREF(io);
         Py_DECREF(binary);
         PyMem_FREE(found_encoding);
-        return PyErr_SetFromErrnoWithFilenameObject(PyExc_IOError, filename);
+        return 0;
     }
     fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding);
     Py_DECREF(io);