Monitor: Convert do_closefd() to cmd_new_ret()

Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

monitor.c

@@ -2447,7 +2447,7 @@ static int do_getfd(Monitor *mon, const QDict *qdict, QObject **ret_data)
     return 0;
 }
 
-static void do_closefd(Monitor *mon, const QDict *qdict, QObject **ret_data)
+static int do_closefd(Monitor *mon, const QDict *qdict, QObject **ret_data)
 {
     const char *fdname = qdict_get_str(qdict, "fdname");
     mon_fd_t *monfd;
@@ -2461,10 +2461,11 @@ static void do_closefd(Monitor *mon, const QDict *qdict, QObject **ret_data)
         close(monfd->fd);
         qemu_free(monfd->name);
         qemu_free(monfd);
-        return;
+        return 0;
     }
 
     qemu_error_new(QERR_FD_NOT_FOUND, fdname);
+    return -1;
 }
 
 static void do_loadvm(Monitor *mon, const QDict *qdict)

qemu-monitor.hx

@@ -1100,7 +1100,7 @@ ETEXI
         .params     = "closefd name",
         .help       = "close a file descriptor previously passed via SCM rights",
         .user_print = monitor_user_noop,
-        .mhandler.cmd_new = do_closefd,
+        .cmd_new_ret = do_closefd,
     },
 
 STEXI