[gjs] system: Fix leak in addressOf()

[Giovanni Campagna <gcampagna src gnome org>]

commit 9d9576edfc6e293cc70b7217148ed7dbea151dc8
Author: Pavel Vasin <rat4vier gmail com>
Date:   Tue Mar 5 10:04:44 2013 +0400

    system: Fix leak in addressOf()
    
    https://bugzilla.gnome.org/show_bug.cgi?id=695186

 modules/system.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/modules/system.c b/modules/system.c
index c650a8a..6b68b77 100644
--- a/modules/system.c
+++ b/modules/system.c
@@ -48,6 +48,8 @@ gjs_address_of(JSContext *context,
     pointer_string = g_strdup_printf("%p", target_obj);
 
     ret = gjs_string_from_utf8(context, pointer_string, -1, &retval);
+    g_free(pointer_string);
+
     if (ret)
         JS_SET_RVAL(context, vp, retval);