fix changes.txt for MAPREDUCE-6391.

hadoop-mapreduce-project/CHANGES.txt

@@ -208,6 +208,9 @@ Trunk (Unreleased)
 
     MAPREDUCE-6257. Document encrypted spills (Bibin A Chundatt via aw)
 
+    MAPREDUCE-6391. util/Timer.cc completely misunderstands _POSIX_CPUTIME
+    (Alan Burlison via aw)
+
   BREAKDOWN OF MAPREDUCE-2841 (NATIVE TASK) SUBTASKS
 
     MAPREDUCE-5985. native-task: Fix build on macosx. Contributed by
@@ -589,9 +592,6 @@ Release 2.8.0 - UNRELEASED
     MAPREDUCE-6484. Yarn Client uses local address instead of RM address as
     token renewer in a secure cluster when RM HA is enabled. (Zhihai Xu)
 
-    MAPREDUCE-6391. util/Timer.cc completely misunderstands _POSIX_CPUTIME
-    (Alan Burlison via aw)
-
    MAPREDUCE-6480. archive-logs tool may miss applications (rkanter)
 
    MAPREDUCE-6494. Permission issue when running archive-logs tool as