Fix timeouting example from godbolt

[AlexInLog]

https://godbolt.org/z/YGeMe1n5j

but this one works, hmmm

https://godbolt.org/z/oj778dvoK

[AlexInLog]

Ok, looks like it is because repeat is trying to schedule repeating via current_thraed while new_thread is such an current_thread under disposing...