`slice.unique` still returns incorrect slice about odin HOT 2 CLOSED

	s := []int{2,2,2}
	res := slice.unique(s)
	assert(slice.equal(res,[]int{2}))

	res = slice.unique([]int{1,1,1,2,2,3,3,3,3})
	assert(slice.equal(res, []int{1,2,3}))

	res = slice.unique_proc([]int{1,1,1,2,2,3,3,3,3}, proc(a, b: int) -> bool {
		return a == b
	})
	assert(slice.equal(res, []int{1,2,3}))