git: 896c3e6e8a61 - stable/13 - Fix compilation issue when kernel built without FFS defined.

The branch stable/13 has been updated by mckusick:

URL: https://cgit.FreeBSD.org/src/commit/?id=896c3e6e8a61606adf4414279c4699918f921510

commit 896c3e6e8a61606adf4414279c4699918f921510
Author:     Kirk McKusick <mckusick@FreeBSD.org>
AuthorDate: 2022-12-04 05:20:39 +0000
Commit:     Kirk McKusick <mckusick@FreeBSD.org>
CommitDate: 2022-12-04 05:21:32 +0000

    Fix compilation issue when kernel built without FFS defined.
    
    This is not cherry-picked because it occurs only in 13 and not
    in 14 or later kernels.
    
    Reported by:  Boris Korzun
    Tested by:    Boris Korzun
    PR:           263979
    Sponsored by: The FreeBSD Foundation
---
 sys/ufs/ffs/ffs_subr.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/ufs/ffs/ffs_subr.c b/sys/ufs/ffs/ffs_subr.c
index 42f1e1a1cad3..d847373a8cde 100644
--- a/sys/ufs/ffs/ffs_subr.c
+++ b/sys/ufs/ffs/ffs_subr.c
@@ -332,9 +332,11 @@ readsuper(void *devfd, struct fs **fsp, off_t sblockloc, int isaltsblk,
  */
 static int prtmsg = 1;
 #ifdef _KERNEL
+#ifdef FFS
 SYSCTL_DECL(_vfs_ffs);
 SYSCTL_INT(_vfs_ffs, OID_AUTO, prtsberrmsg, CTLFLAG_RWTUN, &prtmsg, 0,
     "Print error messages when bad superblock values are found");
+#endif /* FFS */
 #endif /* _KERNEL */
 #endif /* STANDALONE_SMALL */
 #undef CHK