adding newline to pass scalastyle check

core/src/main/scala/org/apache/spark/storage/BlockExInfo.scala

@@ -65,4 +65,5 @@ class BlockExInfo(val blockId: RDDBlockId) extends Comparable[BlockExInfo] {
   override def compareTo(o: BlockExInfo): Int = {
     this.norCost.compare(o.norCost)
   }
-}
+}
\ No newline at end of file
+