[gtk/clipboard-test] Fix clipboard tests

[Matthias Clasen <matthiasc src gnome org>]

commit 9971892a4d1998124e7ce23a31cebba4ba8ba829
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Apr 29 22:08:36 2021 -0400

    Fix clipboard tests
    
    Embarrassing bug: We are connecting to notify::is-active
    to defer our clipboard operation until the window has focus.
    But when we launch the getter instance with its own window,
    we lose the focus, and get another notify::is-active emission.
    
    Ignore the second one.

 testsuite/gdk/clipboard-client.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/testsuite/gdk/clipboard-client.c b/testsuite/gdk/clipboard-client.c
index 726f50d45c..d11d17458a 100644
--- a/testsuite/gdk/clipboard-client.c
+++ b/testsuite/gdk/clipboard-client.c
@@ -188,6 +188,9 @@ do_it (GObject    *object,
 {
   GdkClipboard *clipboard;
 
+  if (!gtk_window_is_active (GTK_WINDOW (object)))
+    return;
+
   clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
 
   if (strcmp (action, "info") == 0)