[gtk+/gtk-3-14] gdk: Add some parameter checking

[Matthias Clasen <matthiasc src gnome org>]

commit 49b2d846442d666c404981b5a8b18260d58b601d
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 17 18:37:20 2015 -0400

    gdk: Add some parameter checking
    
    This may help coverity recognize that we're not called with
    invalid combinations.

 gdk/gdkwindow.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 02af831..b26047b 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -9430,6 +9430,8 @@ gdk_window_set_geometry_hints (GdkWindow         *window,
                               const GdkGeometry *geometry,
                               GdkWindowHints     geom_mask)
 {
+  g_return_if_fail (geometry != NULL || geom_mask == 0);
+
   GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_geometry_hints (window, geometry, geom_mask);
 }