[glib] gdbusconnection: Fix signal subscription documentation

[Matthias Clasen <matthiasc src gnome org>]

commit be7de8a7fd0883f8514cf8b532ce1c820f7e35fa
Author: Arun Raghavan <git arunraghavan net>
Date:   Tue Jul 21 12:09:16 2015 +0530

    gdbusconnection: Fix signal subscription documentation
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752656

 gio/gdbusconnection.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gio/gdbusconnection.c b/gio/gdbusconnection.c
index d50e4c7..7b71bd0 100644
--- a/gio/gdbusconnection.c
+++ b/gio/gdbusconnection.c
@@ -3330,7 +3330,8 @@ is_signal_data_for_name_lost_or_acquired (SignalData *signal_data)
  *     all object paths
  * @arg0: (allow-none): contents of first string argument to match on or %NULL
  *     to match on all kinds of arguments
- * @flags: flags describing how to subscribe to the signal (currently unused)
+ * @flags: #GDBusSignalFlags describing how arg0 is used in subscribing to the
+ *     signal
  * @callback: callback to invoke when there is a signal matching the requested data
  * @user_data: user data to pass to @callback
  * @user_data_free_func: (allow-none): function to free @user_data with when