label: Don't crash when a builder file contains unknown attributes

diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 45531d8ae01d4800b05a8e4be321b1f0585fcfd8..2fb4dc9f0e3fba34274bd42e4011d8b075e77234 100644 (file)
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -1531,11 +1531,12 @@ pango_start_element (GMarkupParseContext *context,
        }
 
       attr = attribute_from_text (data->builder, name, value, error);
-      attr->start_index = start_val;
-      attr->end_index   = end_val;
 
       if (attr)
        {
+          attr->start_index = start_val;
+          attr->end_index   = end_val;
+
          if (!data->attrs)
            data->attrs = pango_attr_list_new ();