SUNRPC: Kill compiler warning when RPC_DEBUG is unset

Loads of these:

linux/net/sunrpc/rpcb_clnt.c:942:2: warning: suggest braces around
  empty body in ‘do’ statement [-Wempty-body]

show up when I unset CONFIG_PROC_SYSCTL.  Seen with

  gcc (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9)

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h
index 9448eb5e426c..a76cc20d98ce 100644
--- a/include/linux/sunrpc/debug.h
+++ b/include/linux/sunrpc/debug.h
@@ -74,8 +74,8 @@ extern unsigned int		nlm_debug;
 # define RPC_IFDEBUG(x)         x
 #else
 # define ifdebug(fac)           if (0)
-# define dfprintk(fac, args...) do ; while (0)
-# define dfprintk_rcu(fac, args...)     do ; while (0)
+# define dfprintk(fac, args...) do {} while (0)
+# define dfprintk_rcu(fac, args...)     do {} while (0)
 # define RPC_IFDEBUG(x)
 #endif