common: Use slice.swap() to clean up SectorHeaderIter::sort().

diff --git a/src/common/logger.rs b/src/common/logger.rs
index 022b155f7d1b90b9667d5291dd4b8da9115b5dbb..95f4a4342a1f0320f76a98b26d5909f217442663 100644 (file)
--- a/src/common/logger.rs
+++ b/src/common/logger.rs
@@ -252,9 +252,7 @@ impl<'a> SectorHeaderIter<'a> {
         }
 
         for i in (1..num_elts_to_sort).rev() {
-            let t = self.indices[0];
-            self.indices[0] = self.indices[i];
-            self.indices[i] = t;
+            self.indices.swap(0, i);
 
             downheap(&mut self.indices, 0, i - 1, self.sector_header);
         }