[c10] Fix typo in __assert_fail noreturn modifier guard (#34157)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34157
`[[noreturn]` only conficts with CUDA __asert_fail defition if clang is used if host compiler
Test Plan: CI
Reviewed By: EscapeZero
Differential Revision: D20232088
fbshipit-source-id: 7182c28a15278e03175865cd0c87410c5de5bf2c
