[Qemu-devel] [PATCH] Fix build error when VNC is configured out

[Christophe de Dinechin <dinechin@redhat.com>]

In hmp_change(), the variable hmp_mon is only used
by code under #ifdef CONFIG_VNC. This results in a build
error when VNC is configured out with the default of
treating warnings as errors:

monitor/hmp-cmds.c: In function ‘hmp_change’:
monitor/hmp-cmds.c:1946:17: error: unused variable ‘hmp_mon’ [-Werror=unused-variable]
1946 |     MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
     |                 ^~~~~~~

Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
---
 monitor/hmp-cmds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index c283dde0e9..038614da8e 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1943,7 +1943,6 @@ static void hmp_change_read_arg(void *opaque, const char *password,
 
 void hmp_change(Monitor *mon, const QDict *qdict)
 {
-    MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
     const char *device = qdict_get_str(qdict, "device");
     const char *target = qdict_get_str(qdict, "target");
     const char *arg = qdict_get_try_str(qdict, "arg");
@@ -1952,6 +1951,7 @@ void hmp_change(Monitor *mon, const QDict *qdict)
     Error *err = NULL;
 
 #ifdef CONFIG_VNC
+    MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
     if (strcmp(device, "vnc") == 0) {
         if (read_only) {
             monitor_printf(mon,
-- 
2.20.1