f decays a bit more concise

lightning/src/routing/scoring.rs

@@ -823,8 +823,7 @@ impl<L: Deref<Target = u64>, BRT: Deref<Target = HistoricalBucketRangeTracker>,
 			let mut total_valid_points_tracked = 0;
 			let decays = self.now.duration_since(*self.last_updated).as_secs()
 				.checked_div(params.historical_no_updates_half_life.as_secs())
-				.map(|decays| cmp::min(decays, u32::max_value() as u64) as u32)
-				.unwrap_or(u32::max_value());
+				.map_or(u32::max_value(), |decays| cmp::min(decays, u32::max_value() as u64) as u32);
 			// Rather than actually decaying the individual buckets, which would lose precision, we
 			// simply track whether any buckets have data which wouldn't be decayed to zero, and if
 			// there are none, treat it as if we had no data.