[gimp] app: use gimp_is_restored() rather than object variables.

[Jehan <jehanp src gnome org>]

commit de6e37ebb503e255c8ffbbdbbda827e6af1c294f
Author: Jehan <jehan girinstud io>
Date:   Sat Mar 12 18:59:36 2022 +0100

    app: use gimp_is_restored() rather than object variables.
    
    Since commit 4473951d4b5, the function check for both initialized and
    restored variables. So let's use this.

 app/gui/gimpdbusservice.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/app/gui/gimpdbusservice.c b/app/gui/gimpdbusservice.c
index 08e52a6c3f..1a63a554ae 100644
--- a/app/gui/gimpdbusservice.c
+++ b/app/gui/gimpdbusservice.c
@@ -331,7 +331,7 @@ gimp_dbus_service_process_idle (GimpDBusService *service)
 {
   IdleData *data;
 
-  if (! service->gimp->initialized || ! service->gimp->restored)
+  if (! gimp_is_restored (service->gimp))
     {
       if (! service->timeout_source)
         {