git: 8e9db62e7423 - main - zfs: Appease set by unused warnings for spl_fstrans_*mark stubs.

From: John Baldwin <jhb_at_FreeBSD.org>
Date: Mon, 10 Apr 2023 17:44:02 UTC 
The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=8e9db62e7423eed795291ac88622fbed018b6abd

commit 8e9db62e7423eed795291ac88622fbed018b6abd
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2023-04-10 17:36:14 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2023-04-10 17:36:14 +0000

    zfs: Appease set by unused warnings for spl_fstrans_*mark stubs.
    
    Use a void cast to mark the cookie value as used in spl_fstrans_unmark.
    
    Reported by:    GCC
    Differential Revision:  https://reviews.freebsd.org/D39357
---
 sys/contrib/openzfs/include/os/freebsd/zfs/sys/zfs_context_os.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/contrib/openzfs/include/os/freebsd/zfs/sys/zfs_context_os.h b/sys/contrib/openzfs/include/os/freebsd/zfs/sys/zfs_context_os.h
index 1ce72330412c..457fa3af8142 100644
--- a/sys/contrib/openzfs/include/os/freebsd/zfs/sys/zfs_context_os.h
+++ b/sys/contrib/openzfs/include/os/freebsd/zfs/sys/zfs_context_os.h
@@ -78,7 +78,7 @@ extern int hz;
 extern int tick;
 typedef int fstrans_cookie_t;
 #define	spl_fstrans_mark() (0)
-#define	spl_fstrans_unmark(x) (x = 0)
+#define	spl_fstrans_unmark(x) ((void)x)
 #define	signal_pending(x) SIGPENDING(x)
 #define	current curthread
 #define	thread_join(x)