Method unchecked_oom

crates/core/src/error/error.rs:1605–1610

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

(&self)

    ///
    /// `self.is_oom()` must be true.
    unsafe fn unchecked_oom(&self) -> &OutOfMemory {
        debug_assert!(self.is_oom());
        // Safety: `self.is_oom()` and `OutOfMemory` has the same representation
        // as `Self`.
        unsafe { mem::transmute(self) }
    }

    /// # Safety
    ///