[libdazzle] widgets: fix progress menu button usage of gvalue

[Christian Hergert <chergert src gnome org>]

commit cc19c1c61751272b17b8aebb3d857c1626003c12
Author: Christian Hergert <chergert redhat com>
Date:   Mon Feb 4 22:11:23 2019 -0800

    widgets: fix progress menu button usage of gvalue

 src/widgets/dzl-progress-menu-button.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/widgets/dzl-progress-menu-button.c b/src/widgets/dzl-progress-menu-button.c
index a3b81b6..165bde1 100644
--- a/src/widgets/dzl-progress-menu-button.c
+++ b/src/widgets/dzl-progress-menu-button.c
@@ -244,7 +244,7 @@ dzl_progress_menu_button_set_property (GObject      *object,
       break;
 
     case PROP_SHOW_THEATRIC:
-      dzl_progress_menu_button_set_show_theatric (self, g_value_get_double (value));
+      dzl_progress_menu_button_set_show_theatric (self, g_value_get_boolean (value));
       break;
 
     case PROP_THEATRIC_ICON_NAME: