Fix comment.

[kevincox]

The underlying method saturates. This comment was likely written with an old underlying implementation.

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I was reading over the code to check for possible panics in Duration arithmetic and noticed this inconsistency in the comment. I may have misunderstood something but it seems that this just calls a method which saturates.

NepTUN/neptun/src/sleepyinstant/unix.rs

Line 44 in 6d6e95e

pub(crate) fn duration_since(&self, earlier: Instant) -> Duration {

[Hasan6979]

Looks good to me to merge.