[gtk/wip/exalm/image-button: 4/4] test: Ensure .image-button on header bar buttons

[Alexander Mikhaylenko <alexm src gnome org>]

commit 43e33b29902b2e1203160ae8da76e8a0507939ca
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sun May 9 20:53:40 2021 +0500

    test: Ensure .image-button on header bar buttons

 tests/testheaderbar.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/tests/testheaderbar.c b/tests/testheaderbar.c
index 16d16629bc..ebeb971794 100644
--- a/tests/testheaderbar.c
+++ b/tests/testheaderbar.c
@@ -439,7 +439,6 @@ change_header (GtkButton *button, gpointer data)
   GtkWidget *window = GTK_WIDGET (data);
   GtkWidget *label;
   GtkWidget *widget;
-  GtkWidget *image;
   GtkWidget *header;
 
   if (button && gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)))
@@ -470,10 +469,8 @@ change_header (GtkButton *button, gpointer data)
 
       gtk_header_bar_pack_end (GTK_HEADER_BAR (header), widget);
 
-      widget= gtk_button_new ();
-      image = gtk_image_new_from_icon_name ("bookmark-new-symbolic");
+      widget= gtk_button_new_from_icon_name ("bookmark-new-symbolic");
       g_signal_connect (widget, "clicked", G_CALLBACK (on_bookmark_clicked), window);
-      gtk_button_set_child (GTK_BUTTON (widget), image);
 
       gtk_header_bar_pack_start (GTK_HEADER_BAR (header), widget);
     }