[libdazzle] tests: destroy window after main finishes

[Christian Hergert <chergert src gnome org>]

commit 1c39c3d3d9a53eba24bb43f3244b9e9dc4aeaf21
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jun 6 17:58:10 2017 -0700

    tests: destroy window after main finishes

 tests/test-suggestion.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/tests/test-suggestion.c b/tests/test-suggestion.c
index 82df712..636a02d 100644
--- a/tests/test-suggestion.c
+++ b/tests/test-suggestion.c
@@ -313,5 +313,7 @@ main (gint   argc,
 
   gtk_main ();
 
+  gtk_widget_destroy (window);
+
   return 0;
 }