features/changelog: Fix to remove Warning message.

        Fix warning message introduced in changelog
        draining patch. It is not caught in gcc 4.4,
        caught in gcc 4.8!!

Signed-off-by: Kotresh H R <khiremat@redhat.com>

Change-Id: I01a8fda2102a409dd6e935805d4d48b41b615fe8
BUG: 1091817
Signed-off-by: Kotresh H R <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/7636
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: Venky Shankar <vshankar@redhat.com>