Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/compiler/dex/dataflow_iterator.h b/compiler/dex/dataflow_iterator.h
index 847a614..da44ffd 100644
--- a/compiler/dex/dataflow_iterator.h
+++ b/compiler/dex/dataflow_iterator.h
@@ -80,7 +80,7 @@
       GrowableArray<int>* block_id_list_;
       int idx_;
       bool changed_;
-  }; // DataflowIterator
+  };  // DataflowIterator
 
   class ReachableNodesIterator : public DataflowIterator {
     public: