[seed] Fix segfault introduced in the argv changes with NULL argv

[Robert Carr <racarr src gnome org>]

commit 8ef42078909b9b4e5f8b915992f597f9910eea3b
Author: Robert Carr <racarr svn gnome org>
Date:   Fri May 8 23:53:56 2009 -0400

    Fix segfault introduced in the argv changes with NULL argv
---
 libseed/seed-builtins.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/libseed/seed-builtins.c b/libseed/seed-builtins.c
index 4368570..4f23d2d 100644
--- a/libseed/seed-builtins.c
+++ b/libseed/seed-builtins.c
@@ -438,6 +438,8 @@ seed_argv_get_property (JSContextRef ctx,
   gint index;
   
   priv = JSObjectGetPrivate (object);
+  if (!priv->argc)
+    return JSValueMakeUndefined (ctx);
   length = JSStringGetMaximumUTF8CStringSize (property_name);
   cproperty_name = g_alloca (length * sizeof (gchar));
   JSStringGetUTF8CString (property_name, cproperty_name, length);
@@ -497,8 +499,8 @@ seed_init_builtins (SeedEngine * local_eng, gint * argc, gchar *** argv)
 			&seed_breakpoint, obj);
   
   priv = g_new0 (SeedArgvPrivates, 1);
-  priv->argv = *argv;
-  priv->argc = *argc;
+  priv->argv = argv ? *argv : 0;
+  priv->argc = argc ? *argc : 0;
 
   seed_argv_class = JSClassCreate (&seed_argv_def);
   arrayObj = JSObjectMake (local_eng->context, seed_argv_class, priv);