[PATCH] hurd fcntl: remove duplicate do...while in LOCKED macro

[wangshuo_1994@foxmail.com]

From: abushwang <wangshuo_1994@foxmail.com>

commit e1a467d introduces do...while for LOCKED macro. However, there is
already while(0) in LOCKED macro according to HURD_CRITICAL_END in hurd/hurd/signal.h:

    #define HURD_CRITICAL_BEGIN \
      { void *__hurd_critical__ = _hurd_critical_section_lock ()
    #define HURD_CRITICAL_END \
          _hurd_critical_section_unlock (__hurd_critical__); } while (0)

It is robust enough.

Signed-off-by: abushwang <wangshuo_1994@foxmail.com>
---
 sysdeps/mach/hurd/fcntl.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sysdeps/mach/hurd/fcntl.c b/sysdeps/mach/hurd/fcntl.c
index 48608493a1..ea35e9b977 100644
--- a/sysdeps/mach/hurd/fcntl.c
+++ b/sysdeps/mach/hurd/fcntl.c
@@ -109,7 +109,7 @@ __libc_fcntl (int fd, int cmd, ...)
 
       /* Set RESULT by evaluating EXPR with the descriptor locked.
 	 Check for an empty descriptor and return EBADF.  */
-#define LOCKED(expr) do {						      \
+#define LOCKED(expr)							      \
       HURD_CRITICAL_BEGIN;						      \
       __spin_lock (&d->port.lock);					      \
       if (d->port.port == MACH_PORT_NULL)				      \
@@ -117,8 +117,7 @@ __libc_fcntl (int fd, int cmd, ...)
       else								      \
 	result = (expr);						      \
       __spin_unlock (&d->port.lock);					      \
-      HURD_CRITICAL_END;						      \
-} while(0)
+      HURD_CRITICAL_END;
 
     case F_GETFD:		/* Get descriptor flags.  */
       LOCKED (d->flags);
-- 
2.37.3