[gtksourceview] tests: add title to test window

[Christian Hergert <chergert src gnome org>]

commit 6c062d669770d9e336a01646ca4338a438f27803
Author: Christian Hergert <chergert redhat com>
Date:   Wed Sep 30 10:21:19 2020 -0700

    tests: add title to test window

 tests/test-widget.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/tests/test-widget.c b/tests/test-widget.c
index 9c65c43d..9885d927 100644
--- a/tests/test-widget.c
+++ b/tests/test-widget.c
@@ -1158,6 +1158,7 @@ main (int argc, char *argv[])
 
        window = gtk_window_new ();
        gtk_window_set_default_size (GTK_WINDOW (window), 900, 600);
+       gtk_window_set_title (GTK_WINDOW (window), "GtkSourceView Test");
 
        g_signal_connect_swapped (window, "destroy", G_CALLBACK (g_main_loop_quit), main_loop);