Method unchecked_into_dyn_error

crates/core/src/error/error.rs:1625–1630

# Safety `self.is_boxed_dyn_error()` must be true.

(self)

    ///
    /// `self.is_boxed_dyn_error()` must be true.
    unsafe fn unchecked_into_dyn_error(self) -> OwnedPtr<DynError> {
        debug_assert!(self.is_boxed_dyn_error());
        let inner = self.inner.cast::<DynError>();
        mem::forget(self);
        OwnedPtr::new(inner)
    }

    /// # Safety
    ///