r260818 (mfc 250817) breaks stable/9 kernel build with gcc

[john at TheUsGroup.com]

# uname -a
FreeBSD server.theusgroup.com 9.2-STABLE FreeBSD 9.2-STABLE #13 r255954: Mon Sep 30 12:01:08 PDT 2013     john at server.theusgroup.com:/usr/obj/usr/svn/stable/9/sys/SERVER  amd64

# svn info
Path: .
Working Copy Root Path: /usr/svn/stable/9
URL: https://svn0.us-west.freebsd.org/base/stable/9
Relative URL: ^/stable/9
Repository Root: https://svn0.us-west.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 260847
Node Kind: directory
Schedule: normal
Last Changed Author: bryanv
Last Changed Rev: 260838
Last Changed Date: 2014-01-17 19:35:10 -0800 (Fri, 17 Jan 2014

# make buildkernel
...
cc1: warnings being treated as errors
/usr/svn/stable/9/sys/kern/kern_priv.c: In function 'priv_check_cred':
/usr/svn/stable/9/sys/kern/kern_priv.c:162: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
*** [kern_priv.o] Error code 1

John Theus
TheUsGroup.com