[gtk] infobar: Don't store close button visibility separately

[Timm Bäder <baedert src gnome org>]

commit a7de8e6b2f99a3aa98b214742b331ad518cdc26b
Author: Timm Bäder <mail baedert org>
Date:   Fri Feb 14 18:06:39 2020 +0100

    infobar: Don't store close button visibility separately
    
    We can already set and query that value via
    gtk_widget_{get,set}_visible() on the close button.

 gtk/gtkinfobar.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkinfobar.c b/gtk/gtkinfobar.c
index 53ded51055..4cf7989292 100644
--- a/gtk/gtkinfobar.c
+++ b/gtk/gtkinfobar.c
@@ -163,7 +163,6 @@ typedef struct
   GtkWidget *close_button;
   GtkWidget *revealer;
 
-  gboolean show_close_button;
   GtkMessageType message_type;
   int default_response;
   gboolean default_response_sensitive;
@@ -1247,9 +1246,8 @@ gtk_info_bar_set_show_close_button (GtkInfoBar *info_bar,
 
   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 
-  if (setting != priv->show_close_button)
+  if (setting != gtk_info_bar_get_show_close_button (info_bar))
     {
-      priv->show_close_button = setting;
       gtk_widget_set_visible (priv->close_button, setting);
       g_object_notify_by_pspec (G_OBJECT (info_bar), props[PROP_SHOW_CLOSE_BUTTON]);
     }
@@ -1270,7 +1268,7 @@ gtk_info_bar_get_show_close_button (GtkInfoBar *info_bar)
 
   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), FALSE);
 
-  return priv->show_close_button;
+  return gtk_widget_get_visible (priv->close_button);
 }
 
 /**