gh-148074: Fix typeobject.c missing error return (#148075)

Author: Wulian233

Objects/typeobject.c

@@ -9345,6 +9345,7 @@ type_ready_post_checks(PyTypeObject *type)
             PyErr_Format(PyExc_SystemError,
                          "type %s has a tp_dictoffset that is too small",
                          type->tp_name);
+            return -1;
         }
     }
     return 0;