[glib/glib-2-30] g_variant_unref: add g_return_if_fail() NULL check

[Ryan Lortie <ryanl src gnome org>]

commit 35a9f3a7f29c74c811b32c0907ce29390c7180da
Author: Ryan Lortie <desrt desrt ca>
Date:   Mon Oct 3 11:12:01 2011 -0400

    g_variant_unref: add g_return_if_fail() NULL check
    
    Patch from Rodney Dawes.

 glib/gvariant-core.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/glib/gvariant-core.c b/glib/gvariant-core.c
index aa31d48..d37f135 100644
--- a/glib/gvariant-core.c
+++ b/glib/gvariant-core.c
@@ -614,6 +614,8 @@ g_variant_is_trusted (GVariant *value)
 void
 g_variant_unref (GVariant *value)
 {
+  g_return_if_fail (value != NULL);
+
   if (g_atomic_int_dec_and_test (&value->ref_count))
     {
       if G_UNLIKELY (value->state & STATE_LOCKED)