[PATCH v3 19/23] monitor: Better express monitor_read()'s opaque arg is of Monitor type

monitor_read() is a IOReadHandler handler, called by
qemu_chr_fe_set_handlers() with a Monitor* opaque argument.

Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
---
 monitor/hmp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/monitor/hmp.c b/monitor/hmp.c
index 24076dc7c03..bfe3cea902c 100644
--- a/monitor/hmp.c
+++ b/monitor/hmp.c
@@ -1519,7 +1519,8 @@ cleanup:
 
 static void monitor_read(void *opaque, const uint8_t *buf, int size)
 {
-    MonitorHMP *hmon = container_of(opaque, MonitorHMP, parent_obj);
+    Monitor *mon = opaque;
+    MonitorHMP *hmon = container_of(mon, MonitorHMP, parent_obj);
     int i;
 
     if (hmon->rs) {
-- 
2.53.0