[glib/application-replace] fixup! Add tests for --gapplication-replace

[Matthias Clasen <matthiasc src gnome org>]

commit 3338b62646a5a19286c454ed06fa2889c61b60e3
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Nov 9 12:38:57 2018 -0500

    fixup! Add tests for --gapplication-replace

 gio/tests/gapplication.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gio/tests/gapplication.c b/gio/tests/gapplication.c
index c90a06069..ec57977a5 100644
--- a/gio/tests/gapplication.c
+++ b/gio/tests/gapplication.c
@@ -1037,6 +1037,7 @@ startup_cb (GApplication *app,
 static void
 activate (gpointer data)
 {
+  /* GApplication complains if we don't connect to ::activate */
 }
 
 static gboolean