[gtk+] Fix the icontheme test

[Matthias Clasen <matthiasc src gnome org>]

commit 33ec75944f083a5ce7ef6112ac91ac1a197e40fd
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 16 15:42:28 2018 -0500

    Fix the icontheme test
    
    We rely on log messages here. Since logging is per-display
    now, we need to set a display on our custom icontheme object
    to get the expected log messages.

 testsuite/gtk/icontheme.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/testsuite/gtk/icontheme.c b/testsuite/gtk/icontheme.c
index cf46647..a1d6e8f 100644
--- a/testsuite/gtk/icontheme.c
+++ b/testsuite/gtk/icontheme.c
@@ -18,6 +18,7 @@ get_test_icontheme (gboolean force_reload)
 
   icon_theme = gtk_icon_theme_new ();
   gtk_icon_theme_set_custom_theme (icon_theme, "icons");
+  gtk_icon_theme_set_display (icon_theme, gdk_display_get_default ());
   current_dir = g_test_get_dir (G_TEST_DIST);
   gtk_icon_theme_set_search_path (icon_theme, &current_dir, 1);