[evolution] Fix return types to match the type of function

[Kjartan Maraas <kmaraas src gnome org>]

commit 56c5d32633bcbc91859771d09dfc2b30003d4090
Author: Kjartan Maraas <kmaraas gnome org>
Date:   Wed Aug 26 21:51:35 2009 +0200

    Fix return types to match the type of function

 widgets/misc/e-attachment.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/widgets/misc/e-attachment.c b/widgets/misc/e-attachment.c
index 25fc4bb..44bf29c 100644
--- a/widgets/misc/e-attachment.c
+++ b/widgets/misc/e-attachment.c
@@ -2658,8 +2658,8 @@ e_attachment_save_finish (EAttachment *attachment,
 	GSimpleAsyncResult *simple;
 	GFile *destination;
 
-	g_return_val_if_fail (E_IS_ATTACHMENT (attachment), FALSE);
-	g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (result), FALSE);
+	g_return_val_if_fail (E_IS_ATTACHMENT (attachment), NULL);
+	g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (result), NULL);
 
 	simple = G_SIMPLE_ASYNC_RESULT (result);
 	destination = g_simple_async_result_get_op_res_gpointer (simple);