[vala/0.40] libvaladoc/girimporter: Skip "attribute" elements

[Rico Tzschichholz <ricotz src gnome org>]

commit f5934f9b2ade3877aa911f3891aab795a98cfd88
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Aug 23 17:50:14 2020 +0200

    libvaladoc/girimporter: Skip "attribute" elements
    
    This is the same patch as in commit 6ea19c61015d0dd6cacb581397c8fe37ace9df4a

 libvaladoc/importer/girdocumentationimporter.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/libvaladoc/importer/girdocumentationimporter.vala 
b/libvaladoc/importer/girdocumentationimporter.vala
index 656a35e16..0589a7f0b 100644
--- a/libvaladoc/importer/girdocumentationimporter.vala
+++ b/libvaladoc/importer/girdocumentationimporter.vala
@@ -362,6 +362,8 @@ public class Valadoc.Importer.GirDocumentationImporter : DocumentationImporter {
                                }
                        } else if (reader.name == "source-position") {
                                skip_element ();
+                       } else if (reader.name == "attribute") {
+                               skip_element ();
                        } else {
                                break;
                        }