[gtksourceview] test-widget: call gtk_source_init/finalize()

[Sébastien Wilmet <swilmet src gnome org>]

commit 29bec4cd9e59de255499474e07dab1dc4bbd2cf1
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Oct 28 13:53:45 2017 +0200

    test-widget: call gtk_source_init/finalize()
    
    Just launching and closing test-widget, I correctly obtain the following
    output with gobject-list, with GOBJECT_LIST_FILTER=GtkSource:
    
    Still Alive:
    0 objects
    
    And the i18n/l10n works too.

 tests/test-widget.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/tests/test-widget.c b/tests/test-widget.c
index 9758a35..39e0fc3 100644
--- a/tests/test-widget.c
+++ b/tests/test-widget.c
@@ -1086,6 +1086,7 @@ main (int argc, char *argv[])
        TestWidget *test_widget;
 
        gtk_init (&argc, &argv);
+       gtk_source_init ();
 
        window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
        gtk_window_set_default_size (GTK_WINDOW (window), 900, 600);
@@ -1098,5 +1099,8 @@ main (int argc, char *argv[])
        gtk_widget_show (window);
 
        gtk_main ();
+
+       gtk_source_finalize ();
+
        return 0;
 }