pytorch

ca0cdf52 - `dl_open_guard` should restore flag even after exception (#96231) (#96457)

`dl_open_guard` should restore flag even after exception (#96231) (#96457) I.e. follow pattern outlined in https://docs.python.org/3.8/library/contextlib.html#contextlib.contextmanager Also, return early on non-unix platforms (when `sys.getdlopenflags` is not defined) Fixes https://github.com/pytorch/pytorch/issues/96159 Pull Request resolved: https://github.com/pytorch/pytorch/pull/96231 Approved by: https://github.com/atalman (cherry picked from commit 941ff109d32d51d6e93a2c2f4a028ff3826ece31)