[glib/GVariantType] make g_variant_type_string_scan equal its docs

[Ryan Lortie <ryanl src gnome org>]

commit 3ba9988ce2459b0e01c08f127ec1cf2ffbf2f637
Author: Ryan Lortie <desrt desrt ca>
Date:   Fri Jan 22 19:19:37 2010 -0500

    make g_variant_type_string_scan equal its docs
    
    g_varant_type_string_scan had an unadvertised feature.  remove it.

 glib/gvarianttype.c |   11 ++++-------
 1 files changed, 4 insertions(+), 7 deletions(-)
---
diff --git a/glib/gvarianttype.c b/glib/gvarianttype.c
index a8ef945..33281e2 100644
--- a/glib/gvarianttype.c
+++ b/glib/gvarianttype.c
@@ -585,11 +585,6 @@ g_variant_type_string_scan (const gchar  *string,
 
   if (endptr != NULL)
     *endptr = string;
-  else
-    {
-      if (string != limit && *string != '\0')
-        return FALSE;
-    }
 
   return TRUE;
 }
@@ -608,12 +603,14 @@ g_variant_type_string_scan (const gchar  *string,
 gboolean
 g_variant_type_string_is_valid (const gchar *type_string)
 {
+  gchar *endptr;
+
   g_return_val_if_fail (type_string != NULL, FALSE);
 
-  if (!g_variant_type_string_scan (type_string, NULL, NULL))
+  if (!g_variant_type_string_scan (type_string, NULL, &endptr))
     return FALSE;
 
-  return TRUE;
+  return *endptr == '\0';
 }
 
 /**