Fix CHANGES.txt for HDFS-7722.

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -882,6 +882,9 @@ Release 2.7.0 - UNRELEASED
     TestFsDatasetImpl#testAddVolumeFailureReleasesInUseLock on Linux
     (Xiaoyu Yao via Arpit Agarwal)
 
+    HDFS-7722. DataNode#checkDiskError should also remove Storage when error
+    is found. (Lei Xu via Colin P. McCabe)
+
     BREAKDOWN OF HDFS-7584 SUBTASKS AND RELATED JIRAS
 
       HDFS-7720. Quota by Storage Type API, tools and ClientNameNode
@@ -902,9 +905,6 @@ Release 2.7.0 - UNRELEASED
       HDFS-7806. Refactor: move StorageType from hadoop-hdfs to
       hadoop-common. (Xiaoyu Yao via Arpit Agarwal)
 
-      HDFS-7722. DataNode#checkDiskError should also remove Storage when error
-      is found. (Lei Xu via Colin P. McCabe)
-
 Release 2.6.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES