Fix build error when VNC is configured out

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>
Message-Id: <20190625123905.25434-1-dinechin@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 99ceb0846b..5ca3ebe942 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1962,7 +1962,6 @@ 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");
@@ -1980,6 +1979,7 @@ void hmp_change(Monitor *mon, const QDict *qdict)
         if (strcmp(target, "passwd") == 0 ||
             strcmp(target, "password") == 0) {
             if (!arg) {
+                MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
                 monitor_read_password(hmp_mon, hmp_change_read_arg, NULL);
                 return;
             }