[vala] GAsync: Fix critical warning

[Jürg Billeter <juergbi src gnome org>]

commit 3fa619e7c02f55ae776f82ba5e2b140d46f17692
Author: Jürg Billeter <j bitron ch>
Date:   Tue Jul 7 13:35:53 2009 +0100

    GAsync: Fix critical warning

 codegen/valagerrormodule.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/codegen/valagerrormodule.vala b/codegen/valagerrormodule.vala
index b8ba1a1..90e9552 100644
--- a/codegen/valagerrormodule.vala
+++ b/codegen/valagerrormodule.vala
@@ -151,7 +151,7 @@ internal class Vala.GErrorModule : CCodeDelegateModule {
 
 		if (current_method is CreationMethod) {
 			cerror_block.add_statement (new CCodeReturnStatement (new CCodeConstant ("NULL")));
-		} else if (current_method.coroutine) {
+		} else if (current_method != null && current_method.coroutine) {
 			cerror_block.add_statement (new CCodeReturnStatement (new CCodeConstant ("FALSE")));
 		} else if (current_return_type is VoidType) {
 			cerror_block.add_statement (new CCodeReturnStatement ());