[valadoc] doclets/gtkdoc: Fix generation of gtk-doc links to error codes

[Florian Brosch <flobrosch src gnome org>]

commit 947b2f174db3d39b4dab191bdf10946321bc02eb
Author: Philip Withnall <philip tecnocode co uk>
Date:   Thu Aug 16 21:02:59 2012 +0200

    doclets/gtkdoc: Fix generation of gtk-doc links to error codes
    
    They were being handled by the catch-all case, which doesnât
    correctly add âCAPSâ to the link.

 src/doclets/gtkdoc/utils.vala |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/doclets/gtkdoc/utils.vala b/src/doclets/gtkdoc/utils.vala
index dd0fb45..9bd2df5 100644
--- a/src/doclets/gtkdoc/utils.vala
+++ b/src/doclets/gtkdoc/utils.vala
@@ -98,6 +98,9 @@ namespace Gtkdoc {
 		} else if (item is Api.Constant) {
 			var cname = ((Api.Constant)item).get_cname ();
 			return """<link linkend="%s:CAPS"><literal>%s</literal></link>""".printf (to_docbook_id (cname), cname);
+		} else if (item is Api.ErrorCode) {
+			var cname = ((Api.ErrorCode)item).get_cname ();
+			return """<link linkend="%s:CAPS"><literal>%s</literal></link>""".printf (to_docbook_id (cname), cname);
 		} else if (item is Api.Property) {
 			string name;
 			string parent;