[gtk+] Fix return value error in gdk_window_set_pass_through

[Ting-Wei Lan <lantw src gnome org>]

commit 3955d93e9de2afee80b9600e45df54ca85f671a9
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Wed Jun 17 18:01:48 2015 +0800

    Fix return value error in gdk_window_set_pass_through
    
    https://bugzilla.gnome.org/show_bug.cgi?id=751099

 gdk/gdkwindow.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index f1971cb..d4938a3 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -6852,7 +6852,7 @@ gdk_window_set_pass_through (GdkWindow *window,
 gboolean
 gdk_window_get_pass_through (GdkWindow *window)
 {
-  g_return_if_fail (GDK_IS_WINDOW (window));
+  g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
 
   return window->pass_through;
 }