time: improve Entry field comment (#2671)

Applying a suggestion from #2617 to make the sentence more clear.
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Blas Rodriguez Irizar 2020-07-20 23:29:25 +02:00 committed by GitHub
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@ -30,7 +30,8 @@ pub(crate) struct Entry {
/// Timer internals. Using a weak pointer allows the timer to shutdown
/// without all `Delay` instances having completed.
///
/// When `None`, the entry has not yet been linked with a timer instance.
/// When empty, it means that the entry has not yet been linked with a
/// timer instance.
inner: Weak<Inner>,
/// Tracks the entry state. This value contains the following information: