git: d893d9e94d71 - main - xen/dev: remove write-only variable

The branch main has been updated by mhorne:

URL: https://cgit.FreeBSD.org/src/commit/?id=d893d9e94d71b6bd0a401ebf3d61b13bf89bb315

commit d893d9e94d71b6bd0a401ebf3d61b13bf89bb315
Author:     Elliott Mitchell <ehem+freebsd@m5p.com>
AuthorDate: 2021-10-08 21:43:26 +0000
Commit:     Mitchell Horne <mhorne@FreeBSD.org>
CommitDate: 2021-11-30 21:11:57 +0000

    xen/dev: remove write-only variable
    
    This was found while looking for driver_filter_t functions which got the
    trap frame from the argument.  This particular instance it isn't even
    used, so remove now lest someone else get to it first.
    
    Reviewed by:    mhorne
---
 sys/dev/xen/debug/debug.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/sys/dev/xen/debug/debug.c b/sys/dev/xen/debug/debug.c
index ec4585e64c62..c4562c02ed03 100644
--- a/sys/dev/xen/debug/debug.c
+++ b/sys/dev/xen/debug/debug.c
@@ -69,13 +69,11 @@ extern void
 stack_capture(struct stack *st, register_t rbp);
 
 static int
-xendebug_filter(void *arg)
+xendebug_filter(void *arg __unused)
 {
 #if defined(STACK) && defined(DDB)
 	struct stack st;
-	struct trapframe *frame;
 
-	frame = arg;
 	stack_zero(&st);
 	stack_save(&st);