[gtk+/composite-templates] Added parent property to external-object tag

[Juan Pablo Ugarte <jpu src gnome org>]

commit 1cffd1de56e8e4b16c50a16c1540bd66d5b1e398
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Wed Feb 13 19:05:02 2013 -0300

    Added parent property to external-object tag

 gtk/gtkbuilderparser.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkbuilderparser.c b/gtk/gtkbuilderparser.c
index ebb7f05..3a9ab9e 100644
--- a/gtk/gtkbuilderparser.c
+++ b/gtk/gtkbuilderparser.c
@@ -920,6 +920,7 @@ parse_external_object (ParserData   *data,
         class_name = values[i];
       else if (strcmp (names[i], "id") == 0)
         id = values[i];
+      else if (strcmp (names[i], "parent") == 0);
       else
         {
           error_invalid_attribute (data, element_name, names[i], error);