Fix typo in HDFS-993 commit. Was -933.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1207676 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -2590,7 +2590,7 @@ Release 0.21.0 - 2010-08-13
     HDFS-1012. hdfsproxy: Support for fully qualified HDFS path in addition to
     simple unqualified path.  (Srikanth Sundarrajan via szetszwo)
 
-    HDFS-933. Namenode should issue a delegation token only for kerberos 
+    HDFS-993. Namenode should issue a delegation token only for kerberos 
     authenticated clients.(jnp via boryas)
 
     HDFS-1087. Modify audit log to use a StringBuilder rather than a Formatter.