[gtk+] testgtk: Fix the scrolledwindow test

[Matthias Clasen <matthiasc src gnome org>]

commit d3014c23b9d37eab3ff4a948bc6d4ab0bf70d873
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 1 10:24:12 2018 -0500

    testgtk: Fix the scrolledwindow test
    
    We need to expand here, otherwise things look wrong.

 tests/testgtk.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/tests/testgtk.c b/tests/testgtk.c
index e3c1816..d709e21 100644
--- a/tests/testgtk.c
+++ b/tests/testgtk.c
@@ -2791,6 +2791,8 @@ create_scrolled_windows (GtkWidget *widget)
       gtk_window_set_title (GTK_WINDOW (window), "dialog");
 
       scrolled_window = gtk_scrolled_window_new (NULL, NULL);
+      gtk_widget_set_hexpand (scrolled_window, TRUE);
+      gtk_widget_set_vexpand (scrolled_window, TRUE);
       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                                      GTK_POLICY_AUTOMATIC,
                                      GTK_POLICY_AUTOMATIC);