[src/trunk]: src/sys/uvm use __USE() for empty macro

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/128737db1299
branches:  trunk
changeset: 790619:128737db1299
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Oct 18 17:48:44 2013 +0000

description:
use __USE() for empty macro

diffstat:

 sys/uvm/uvm_aobj.h |  4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diffs (18 lines):

diff -r b9dcf528b444 -r 128737db1299 sys/uvm/uvm_aobj.h
--- a/sys/uvm/uvm_aobj.h        Fri Oct 18 17:03:02 2013 +0000
+++ b/sys/uvm/uvm_aobj.h        Fri Oct 18 17:48:44 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_aobj.h,v 1.22 2012/09/14 18:56:15 rmind Exp $      */
+/*     $NetBSD: uvm_aobj.h,v 1.23 2013/10/18 17:48:44 christos Exp $   */
 
 /*
  * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and
@@ -61,7 +61,7 @@
 bool   uao_swap_off(int, int);
 void   uao_dropswap_range(struct uvm_object *, voff_t, voff_t);
 #else
-#define        uao_find_swslot(obj, off)       0
+#define        uao_find_swslot(obj, off)       (__USE(off), 0)
 #define        uao_dropswap(obj, off)          /* nothing */
 #define        uao_dropswap_range(obj, lo, hi) /* nothing */
 #endif