[gtk+] Return value from non-void function

[Tor Lillqvist <tml src gnome org>]

commit 02457e3a93d8aaea3ea78118eba9a0366cd8c2bb
Author: Shixin Zeng <zeng shixin gmail com>
Date:   Thu Aug 20 23:56:52 2009 +0300

    Return value from non-void function

 gtk/gtkprintoperation.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkprintoperation.c b/gtk/gtkprintoperation.c
index e9b5bb8..c8a85e7 100644
--- a/gtk/gtkprintoperation.c
+++ b/gtk/gtkprintoperation.c
@@ -3243,7 +3243,7 @@ gtk_print_operation_get_has_selection (GtkPrintOperation *op)
 gint
 gtk_print_operation_get_n_pages_to_print (GtkPrintOperation *op)
 {
-  g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
+  g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op), -1);
 
   return op->priv->nr_of_pages_to_print;
 }