LU-6496 ptlrpc: Fix wrong code indentation in plain_authorize

LU-6496 ptlrpc: Fix wrong code indentation in plain_authorize

Dont hide the assignment with ,isleading indentation.

Change-Id: If15fb88e4d31962d07a48c2077179cbfe38adfd8
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Reviewed-on: http://review.whamcloud.com/14591
Tested-by: Jenkins
Reviewed-by: Emoly Liu <emoly.liu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>