[valadoc] doclets/gtkdoclet: Use %NULL when manually commenting errors

[Florian Brosch <flobrosch src gnome org>]

commit 58deea4b051469a61d3aafd4f0fbc9c740aaa2e4
Author: Luca Bruno <lethalman88 gmail com>
Date:   Tue May 4 21:57:50 2010 +0200

    doclets/gtkdoclet: Use %NULL when manually commenting errors

 src/doclets/gtkdoc/generator.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/doclets/gtkdoc/generator.vala b/src/doclets/gtkdoc/generator.vala
index ab0f985..98446bb 100644
--- a/src/doclets/gtkdoc/generator.vala
+++ b/src/doclets/gtkdoc/generator.vala
@@ -295,7 +295,7 @@ public class Gtkdoc.Generator : Api.Visitor {
 					return;
 				}
 			}
-			add_manual_header ("error", "location to store the error occuring, or NULL to ignore", {"out"});
+			add_manual_header ("error", "location to store the error occuring, or %NULL to ignore", {"out"});
 		} else {
 			// error domain definition
 			var old_headers = current_headers;