[glib] Remove unneeded NULL check

[Matthias Clasen <matthiasc src gnome org>]

commit 339cac8fc71f9409f97a4bfc3f42f912c262c06d
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jun 14 09:53:26 2011 -0400

    Remove unneeded NULL check
    
    We ensure 10 lines up that parameters is not NULL.

 gio/gdbusconnection.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gio/gdbusconnection.c b/gio/gdbusconnection.c
index c0ad4e8..2319fc0 100644
--- a/gio/gdbusconnection.c
+++ b/gio/gdbusconnection.c
@@ -3423,8 +3423,7 @@ emit_signal_instance_in_idle_cb (gpointer data)
                                parameters,
                                signal_instance->user_data);
 
-  if (parameters != NULL)
-    g_variant_unref (parameters);
+  g_variant_unref (parameters);
 
   return FALSE;
 }