Move likely/unlikely argument outside of invisible unsafe block

The previous `likely!`/`unlikely!` macros were unsound because it
permits the caller's expr to contain arbitrary unsafe code.

    pub fn huh() -> bool {
        likely!(std::ptr::read(&() as *const () as *const bool))
    }

Before: compiles cleanly.
After:

    error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
       |
    70 |     likely!(std::ptr::read(&() as *const () as *const bool))
       |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
       |
       = note: consult the function's documentation for information on how to avoid undefined behavior

0 files changed, 0 insertions, 0 deletions