[PATCH v3 1/3] monitor/hmp: correctly invert password argument detection again

[Stefan Reiter <s.reiter@proxmox.com>]

Commit cfb5387a1d 'hmp: remove "change vnc TARGET" command' claims to
remove the HMP "change vnc" command, but doesn't actually do that.
Instead it rewires it to use 'qmp_change_vnc_password', and in the
process inverts the argument detection - ignoring the first issue, this
inversion is wrong, as this will now ask the user for a password if one
is already provided, and simply fail if none is given.

Fixes: cfb5387a1d ("hmp: remove "change vnc TARGET" command")
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.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 e00255f7ee..a7e197a90b 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1496,7 +1496,7 @@ void hmp_change(Monitor *mon, const QDict *qdict)
         }
         if (strcmp(target, "passwd") == 0 ||
             strcmp(target, "password") == 0) {
-            if (arg) {
+            if (!arg) {
                 MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
                 monitor_read_password(hmp_mon, hmp_change_read_arg, NULL);
                 return;
-- 
2.30.2