[libdazzle] tab: use g_value_set_variant()

[Christian Hergert <chergert src gnome org>]

commit f50e7b8a5030b3fdf07708c0e545d6b54a677bee
Author: Christian Hergert <chergert redhat com>
Date:   Mon May 6 12:46:35 2019 -0700

    tab: use g_value_set_variant()

 src/panel/dzl-tab.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/panel/dzl-tab.c b/src/panel/dzl-tab.c
index 0e5ae17..a3ead16 100644
--- a/src/panel/dzl-tab.c
+++ b/src/panel/dzl-tab.c
@@ -651,7 +651,7 @@ dzl_tab_get_property (GObject    *object,
       break;
 
     case PROP_ACTION_TARGET:
-      g_value_set_boxed (value, priv->action_target_value);
+      g_value_set_variant (value, priv->action_target_value);
       break;
 
     case PROP_CAN_CLOSE: