git: a95c70012bc3 - main - zfs: Disable -Wunused-but-set-variable for dnode.c.

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=a95c70012bc318af325c1cc6da2fbea305d8afa4

commit a95c70012bc318af325c1cc6da2fbea305d8afa4
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2022-04-13 23:08:20 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2022-04-13 23:08:20 +0000

    zfs: Disable -Wunused-but-set-variable for dnode.c.
    
    dn is only used by DNODE_VERIFY (conditional on ZFS_DEBUG) in
    dnode_special_open.
---
 sys/conf/files           | 2 +-
 sys/modules/zfs/Makefile | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/conf/files b/sys/conf/files
index 44b3982c0edb..e90e3e0ac5b7 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -266,7 +266,7 @@ contrib/openzfs/module/zfs/dmu_send.c		optional zfs compile-with "${ZFS_C}"
 contrib/openzfs/module/zfs/dmu_traverse.c		optional zfs compile-with "${ZFS_C}"
 contrib/openzfs/module/zfs/dmu_tx.c		optional zfs compile-with "${ZFS_C}"
 contrib/openzfs/module/zfs/dmu_zfetch.c		optional zfs compile-with "${ZFS_C}"
-contrib/openzfs/module/zfs/dnode.c		optional zfs compile-with "${ZFS_C}" \
+contrib/openzfs/module/zfs/dnode.c		optional zfs compile-with "${ZFS_C} ${NO_WUNUSED_BUT_SET_VARIABLE}" \
 	warning "kernel contains CDDL licensed ZFS filesystem"
 contrib/openzfs/module/zfs/dnode_sync.c		optional zfs compile-with "${ZFS_C}"
 contrib/openzfs/module/zfs/dsl_bookmark.c		optional zfs compile-with "${ZFS_C}"
diff --git a/sys/modules/zfs/Makefile b/sys/modules/zfs/Makefile
index 086d10a23730..510511a3e118 100644
--- a/sys/modules/zfs/Makefile
+++ b/sys/modules/zfs/Makefile
@@ -339,6 +339,7 @@ CFLAGS.zprop_common.c= -Wno-cast-qual
 CFLAGS.ddt.c= -Wno-cast-qual
 CFLAGS.dmu.c= -Wno-cast-qual
 CFLAGS.dmu_traverse.c= -Wno-cast-qual
+CFLAGS.dnode.c+= ${NO_WUNUSED_BUT_SET_VARIABLE}
 CFLAGS.dsl_dir.c= -Wno-cast-qual
 CFLAGS.dsl_deadlist.c= -Wno-cast-qual
 CFLAGS.dsl_prop.c= -Wno-cast-qual