[Bug target/85397] -mcet -fcf-protection doesn't work with label in nested function

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85397

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
builtin_longjmp has also the same issue as PR 85025.  I fixed it on
hjl/cet/master branch.