[glib] gobject-2.0: Annotate another GSignal function taking instances

[Martin Pitt <martinpitt src gnome org>]

commit ed1e3816adaf43021924a7096bb7dc4d834a9a69
Author: Martin Pitt <martinpitt gnome org>
Date:   Mon Sep 2 12:04:43 2013 +0200

    gobject-2.0: Annotate another GSignal function taking instances
    
    As a followup to commit a72983a, annotate g_signal_handlers_destroy() as well.

 gobject/gsignal.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gobject/gsignal.c b/gobject/gsignal.c
index 903557e..ebdf8d9 100644
--- a/gobject/gsignal.c
+++ b/gobject/gsignal.c
@@ -2620,6 +2620,10 @@ g_signal_handler_is_connected (gpointer instance,
   return connected;
 }
 
+/**
+ * g_signal_handlers_destroy:
+ * @instance: (type GObject.Object): The instance where a signal handler is sought.
+ */
 void
 g_signal_handlers_destroy (gpointer instance)
 {